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A251988 Number of (n+2)X(4+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 1 or 5 1
1182549, 43957515, 2351304453, 143941074215, 9220975438331, 598720936854481, 39038339681025033, 2548856771274494679, 166490920337454372853, 10876714257781843015027, 710600087055415290568237 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A251989

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..22

EXAMPLE

Some solutions for n=1

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

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

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

CROSSREFS

Sequence in context: A204777 A236718 A189408 * A233469 A237849 A345641

Adjacent sequences:  A251985 A251986 A251987 * A251989 A251990 A251991

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 12 2014

STATUS

approved

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Last modified December 2 14:09 EST 2021. Contains 349445 sequences. (Running on oeis4.)