Revision History for A333275
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Showing entries 11-20
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| A333275
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Irregular triangle read by rows: consider the graph defined in A306302 formed from a row of n adjacent congruent rectangles by drawing the diagonals of all visible rectangles; T(n,k) (n >= 1, 2 <= k <= 2n+2) is the number of non-boundary vertices in the graph at which k polygons meet.
(history;
published version)
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#22 by Lars Blomberg at Wed Jun 17 07:44:14 EDT 2020
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Lars Blomberg, <a href="/A333275/b333275.txt">Table of n, a(n) for n = 1..10200</a>> (the first 100 rows)
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Discussion
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| Wed Jun 17
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| Lars Blomberg: The b-file exceeds 10000 terms in order to include all 100 rows.
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#21 by Lars Blomberg at Wed Jun 17 07:42:17 EDT 2020
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| DATA
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0, 0, 1, 0, 0, 6, 0, 1, 0, 0, 24, 0, 2, 0, 1, 0, 0, 54, 0, 8, 0, 2, 0, 1, 0, 0, 124, 0, 18, 0, 2, 0, 2, 0, 1, 0, 0, 214, 0, 32, 0, 10, 0, 2, 0, 2, 0, 1, 0, 0, 382, 0, 50, 0, 22, 0, 2, 0, 2, 0, 2, 0, 1, 0, 0, 598, 0, 102, 0, 18, 0, 12, 0, 2, 0, 2, 0, 2, 0, 1
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Lars Blomberg, <a href="/A333275/b333275.txt">Table of n, a(n) for n = 1..10200</a>
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| EXAMPLE
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0,0,214,0,32,0,10,0,2,0,2,0,1,
0,0,382,0,50,0,22,0,2,0,2,0,2,0,1,
0,0,598,0,102,0,18,0,12,0,2,0,2,0,2,0,1
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| EXTENSIONS
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a(36) and beyond from Lars Blomberg, Jun 17 2020
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| STATUS
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approved
editing
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#20 by N. J. A. Sloane at Sat May 30 23:56:54 EDT 2020
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#19 by N. J. A. Sloane at Sat May 30 23:56:51 EDT 2020
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Scott R. Shannon, <a href="/A331452/a331452_6.png">Colored illustration showing regions for n=1</a>
Scott R. Shannon, <a href="/A331452A331755/a331452_7a331755.png">ColoredImages of illustrationvertices for n=21</a>>.
Scott R. Shannon, <a href="/A331452/a331452_87.png">Colored illustration showing regions for n=32</a>
Scott R. Shannon, <a href="/A331452A331755/a331452a331755_91.png">ColoredImages of illustrationvertices for n=42</a>>.
Scott R. Shannon, <a href="/A331452/a331452_108.png">Colored illustration showing regions for n=53</a>
Scott R. Shannon, <a href="/A331452A331755/a331452a331755_112.png">ColoredImages of illustrationvertices for n=63</a>>.
Scott R. Shannon, <a href="/A331452/a331452_9.png">Colored illustration showing regions for n=4</a>
Scott R. Shannon, <a href="/A331755/a331755_3.png">Images of vertices for n=4</a>.
Scott R. Shannon, <a href="/A331452/a331452_10.png">Colored illustration showing regions for n=5</a>
Scott R. Shannon, <a href="/A331755/a331755_7.png">Images of vertices for n=5</a>
Scott R. Shannon, <a href="/A331452/a331452_11.png">Colored illustration showing regions for n=6</a>
Scott R. Shannon, <a href="/A331755/a331755_8.png">Images of vertices for n=6</a>
Scott R. Shannon, <a href="/A331755/a331755_11.png">Images of vertices for n=7</a>
Scott R. Shannon, <a href="/A331755/a331755_10.png">Images of vertices for n=8</a>
Scott R. Shannon, <a href="/A331755/a331755_4.png">Images of vertices for n=9</a>.
Scott R. Shannon, <a href="/A331755/a331755_5.png">Images of vertices for n=11</a>.
Scott R. Shannon, <a href="/A331755/a331755_6.png">Images of vertices for n=14</a>.
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| STATUS
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approved
editing
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#18 by N. J. A. Sloane at Sat May 30 23:49:50 EDT 2020
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#17 by N. J. A. Sloane at Sat May 30 23:49:48 EDT 2020
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#16 by N. J. A. Sloane at Tue May 19 22:52:15 EDT 2020
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#15 by N. J. A. Sloane at Tue May 19 22:52:12 EDT 2020
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#14 by Giovanni Resta at Sun Mar 15 12:44:09 EDT 2020
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#13 by Michel Marcus at Sun Mar 15 12:42:08 EDT 2020
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