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A252395 Number of (n+2)X(4+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum less than 4 1
2302050, 203636149, 19516646285, 1721897188968, 153561179184793, 13852142421855853, 1245211877882127745, 111846699552528354489, 10053936707442905150238, 903736347830500195509268 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A252397

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..139

EXAMPLE

Some solutions for n=1

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

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

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

CROSSREFS

Sequence in context: A209958 A324637 A186587 * A256733 A210493 A154676

Adjacent sequences:  A252392 A252393 A252394 * A252396 A252397 A252398

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 17 2014

STATUS

approved

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Last modified September 23 12:11 EDT 2021. Contains 347617 sequences. (Running on oeis4.)