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A254997 Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the diagonal and antidiagonal minus the sum of the medians of the central row and column nondecreasing horizontally and vertically 0
3456356, 54357112, 1221043730, 21345394571, 351447919966, 6335613688670, 114535492626380, 2023733203755177, 35825567557412714, 637366584071345641, 11322496580518842504 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A254998

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=1

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

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

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

CROSSREFS

Cf. A254998

Sequence in context: A123201 A258517 A258510 * A236356 A082247 A036473

Adjacent sequences:  A254994 A254995 A254996 * A254998 A254999 A255000

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 11 2015

STATUS

approved

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Last modified May 17 22:15 EDT 2021. Contains 343992 sequences. (Running on oeis4.)