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A251787 Number of (n+2)X(4+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 3 6 or 7 1
6144, 14908, 44504, 149364, 541656, 1765074, 6446816, 24880436, 90369250, 354040208, 1437800720, 5668460910, 23255195002, 97097665658, 400041205158, 1677704911872, 7090646094602, 29794962043796, 126115432891882 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A251791

LINKS

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

EXAMPLE

Some solutions for n=4

..0..1..0..0..0..0....2..1..1..2..2..1....0..0..0..0..0..0....0..2..2..0..3..1

..0..0..0..1..0..0....0..0..0..0..0..1....0..0..0..0..0..0....1..0..3..1..0..3

..1..0..0..0..0..0....3..3..3..3..3..2....0..1..0..0..0..1....3..2..0..3..2..0

..0..0..0..0..0..0....1..2..2..1..2..2....0..0..0..1..0..0....0..3..1..0..3..2

..0..1..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0....1..0..3..2..0..3

..0..0..0..0..0..1....3..3..3..3..3..3....0..0..0..0..1..0....3..2..0..3..2..0

CROSSREFS

Sequence in context: A184501 A205833 A152388 * A203982 A204626 A318251

Adjacent sequences:  A251784 A251785 A251786 * A251788 A251789 A251790

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 08 2014

STATUS

approved

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Last modified October 21 07:53 EDT 2021. Contains 348150 sequences. (Running on oeis4.)