A257147 - OEIS

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A257147

Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column minus the sum of the minimums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally

512, 16677, 732482, 51899365, 6713096472, 1618913713517, 695152560346535, 535333746001462703, 743423728273958126735, 1857204484036444866135303

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OFFSET

1,1

COMMENTS

Diagonal of A257154

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=2

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

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

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

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

CROSSREFS

Cf. A257154

Sequence in context: A254812 A329894 A258523 * A254579 A195657 A072369

Adjacent sequences: A257144 A257145 A257146 * A257148 A257149 A257150

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 16 2015

STATUS

approved