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A252499 Number of (n+2)X(3+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum less than 5 1
3610840, 379549048, 43375710311, 4543445214587, 484455746584740, 52117935523803804, 5579085124570270245, 597482912872030817867, 64033765038315732013105, 6860332820791980455007719 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A252500

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..118

EXAMPLE

Some solutions for n=1

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

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

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

CROSSREFS

Sequence in context: A214173 A183970 A251305 * A235970 A116221 A118813

Adjacent sequences:  A252496 A252497 A252498 * A252500 A252501 A252502

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 17 2014

STATUS

approved

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Last modified July 24 18:34 EDT 2021. Contains 346273 sequences. (Running on oeis4.)