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A253838 Number of (n+2)X(5+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal sum nondecreasing horizontally, vertically and ne-to-sw antidiagonally 1
91296, 127376, 294870, 550535, 156876, 209862, 168884, 85994, 98010, 105807, 97464, 111967, 116598, 123855, 128600, 147622, 143446, 157728, 170206, 173129, 181512, 212428, 198020, 220903, 238078, 240784, 257584, 285985, 274432, 310773 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 5 of A253841
LINKS
FORMULA
Empirical: a(n) = 2*a(n-1) -a(n-2) +2*a(n-6) -4*a(n-7) +3*a(n-8) -2*a(n-9) +a(n-10) -a(n-12) +2*a(n-13) -3*a(n-14) +4*a(n-15) -2*a(n-16) +a(n-20) -2*a(n-21) +a(n-22) for n>34
EXAMPLE
Some solutions for n=2
..0..0..1..1..0..0..0....0..0..0..0..0..0..1....1..0..0..0..0..0..1
..0..0..0..1..1..1..1....0..0..1..0..1..0..0....1..0..1..1..1..1..1
..0..0..0..0..0..0..1....1..0..1..0..1..1..1....1..0..0..0..0..0..0
..1..1..1..1..1..0..1....0..0..1..1..0..0..0....0..0..0..1..1..1..1
CROSSREFS
Sequence in context: A126165 A323753 A255985 * A253845 A253932 A205940
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 16 2015
STATUS
approved

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Last modified July 18 01:22 EDT 2024. Contains 374377 sequences. (Running on oeis4.)