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A252443 Number of (n+2)X(3+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum less than 3 1
9062, 131202, 2091042, 30491181, 454665875, 6833055569, 102043139454, 1526189064960, 22840267867281, 341629869985739, 5110403797875856, 76451550737884426, 1143662281602106798, 17108429658444615062 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A252447

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=2

..0..1..0..1..0....1..0..0..0..0....0..0..0..0..0....1..0..1..0..0

..0..0..0..0..1....0..0..1..0..0....0..0..0..1..0....0..1..1..0..0

..1..1..0..1..1....0..0..1..1..0....0..1..0..0..1....0..0..0..0..0

..1..1..0..1..0....1..0..0..0..0....0..1..0..0..1....1..1..0..1..1

CROSSREFS

Sequence in context: A161610 A204535 A202914 * A061135 A118700 A234339

Adjacent sequences:  A252440 A252441 A252442 * A252444 A252445 A252446

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 17 2014

STATUS

approved

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Last modified December 12 22:06 EST 2019. Contains 329963 sequences. (Running on oeis4.)