The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A233343 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A233343

Number of tilings of a 7 X 3n rectangle using 7n trominoes of any shape.
(history; published version)

#10 by Alois P. Heinz at Tue Feb 07 17:27:45 EST 2017

STATUS

editing

approved

#9 by Alois P. Heinz at Tue Feb 07 17:27:40 EST 2017

LINKS

Wikipedia, <a href="httphttps://en.wikipedia.org/wiki/Tromino">Tromino</a>

STATUS

approved

editing

#8 by OEIS Server at Fri Mar 04 12:16:56 EST 2016

LINKS

Alois P. Heinz, <a href="/A233343/b233343_1.txt">Table of n, a(n) for n = 0..300</a>

#7 by Alois P. Heinz at Fri Mar 04 12:16:56 EST 2016

STATUS

editing

approved

Discussion

Fri Mar 04

12:16

OEIS Server: Installed new b-file as b233343.txt.  Old b-file is now b233343_1.txt.

#6 by Alois P. Heinz at Fri Mar 04 12:16:53 EST 2016

LINKS

Alois P. Heinz, <a href="/A233343/b233343_1.txt">Table of n, a(n) for n = 0..100300</a>

STATUS

approved

editing

#5 by Alois P. Heinz at Sat Dec 07 18:32:58 EST 2013

STATUS

editing

approved

#4 by Alois P. Heinz at Sat Dec 07 18:32:18 EST 2013

LINKS

Wikipedia, <a href="http://en.wikipedia.org/wiki/Tromino">Tromino</a>

#3 by Alois P. Heinz at Sat Dec 07 18:31:49 EST 2013

LINKS

Alois P. Heinz, <a href="/A233343/b233343.txt">Table of n, a(n) for n = 0..100</a>

#2 by Alois P. Heinz at Sat Dec 07 18:29:08 EST 2013

NAME

allocated for Alois P. Heinz

Number of tilings of a 7 X 3n rectangle using 7n trominoes of any shape.

DATA

1, 441, 614581, 1064557805, 1949314526229, 3619365754064658, 6743148875847013949, 12573396789552627635974, 23449283563696481324707977, 43734844458505039459034141789, 81570040233489554572733439665568, 152137050633841639720340771054558899

OFFSET

0,2

CROSSREFS

Trisection of column k=7 of A233320.

KEYWORD

allocated

nonn

AUTHOR

Alois P. Heinz, Dec 07 2013

STATUS

approved

editing

#1 by Alois P. Heinz at Sat Dec 07 18:29:08 EST 2013

NAME

allocated for Alois P. Heinz

KEYWORD

allocated

STATUS

approved