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A251790 Number of (n+2)X(7+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 3 6 or 7 1
44792, 210582, 1035154, 6446816, 46409346, 302373278, 2223220200, 17491571986, 133178140146, 1057141576284, 8545595928834, 68440838650758, 554321839680508, 4510428417394990, 36604951664296024, 297856195560822024 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A251791

LINKS

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

EXAMPLE

Some solutions for n=1

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

..3..3..3..3..3..3..3..2..3....2..3..3..3..3..3..3..3..3

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

CROSSREFS

Sequence in context: A252147 A225814 A209909 * A197421 A197614 A202987

Adjacent sequences:  A251787 A251788 A251789 * A251791 A251792 A251793

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 08 2014

STATUS

approved

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Last modified November 29 18:41 EST 2021. Contains 349416 sequences. (Running on oeis4.)