The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A207042 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A207042

Number of (n+1) X (n+1) 0..2 arrays with every 2 X 3 or 3 X 2 subblock having exactly one clockwise edge increases.
(history; published version)

#8 by Wesley Ivan Hurt at Thu Mar 09 17:40:20 EST 2023

STATUS

editing

approved

#7 by Wesley Ivan Hurt at Thu Mar 09 17:40:12 EST 2023

NAME

Number of (n+1) X (n+1) 0..2 arrays with every 2X3 2 X 3 or 3X2 3 X 2 subblock having exactly one clockwise edge increases.

COMMENTS

Diagonal of A207050.

CROSSREFS

Cf. A207050.

AUTHOR

R. H. Hardin , Feb 14 2012

STATUS

approved

editing

#6 by Russ Cox at Sat Mar 31 12:37:14 EDT 2012

AUTHOR

_R. H. Hardin (rhhardin(AT)att.net) _ Feb 14 2012

Discussion

Sat Mar 31

12:37

OEIS Server: https://oeis.org/edit/global/875

#5 by Ron Hardin at Tue Feb 14 16:59:18 EST 2012

STATUS

editing

approved

#4 by Ron Hardin at Tue Feb 14 16:59:13 EST 2012

LINKS

R. H. Hardin, <a href="/A207042/b207042.txt">Table of n, a(n) for n = 1..28</a>

#3 by Ron Hardin at Tue Feb 14 16:58:48 EST 2012

NAME

allocated for Ron HardinNumber of (n+1)X(n+1) 0..2 arrays with every 2X3 or 3X2 subblock having exactly one clockwise edge increases

DATA

81, 270, 750, 2244, 4944, 11712, 35904, 79104, 187392, 574464, 1265664, 2998272, 9191424, 20250624, 47972352, 147062784, 324009984, 767557632, 2353004544, 5184159744, 12280922112, 37648072704, 82946555904, 196494753792

OFFSET

1,1

COMMENTS

Diagonal of A207050

EXAMPLE

Some solutions for n=4

..2..0..0..1..1....2..2..0..0..0....0..0..1..1..0....1..2..2..2..1

..2..0..0..0..1....2..2..2..0..0....0..1..1..1..2....2..2..2..0..0

..2..2..0..0..0....1..2..2..2..0....1..1..1..2..2....2..2..0..0..0

..2..2..2..0..0....1..1..2..2..2....1..1..2..2..2....2..0..0..0..2

..0..2..2..2..0....1..1..1..2..2....1..2..2..2..1....2..0..0..2..2

KEYWORD

allocated

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) Feb 14 2012

STATUS

approved

editing

#2 by Ron Hardin at Tue Feb 14 16:57:07 EST 2012

KEYWORD

allocating

allocated

#1 by Ron Hardin at Tue Feb 14 16:57:07 EST 2012

NAME

allocated for Ron Hardin

KEYWORD

allocating

STATUS

approved