A255034 Number of (n+2)X(6+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the central row and central column minus the two minimums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally

516998, 1327776, 1217347, 749830, 679364, 553864, 546968, 587072, 613136, 661012, 704692, 760056, 812208, 880920, 995412, 1097716, 1249880, 1392880, 1789880, 2059668, 2611092, 3047448, 4565520, 5504504, 7632692, 9241684, 15240248

Offset

1,1

Comments

Column 6 of A255036

Links

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

Formula

Empirical: a(n) = a(n-1) +a(n-2) -a(n-3) +4*a(n-4) -3*a(n-5) -5*a(n-6) +3*a(n-7) +a(n-8) -4*a(n-9) +4*a(n-10) +4*a(n-11) -4*a(n-12) for n>21

Example

Some solutions for n=1
..0..1..1..0..0..1..0..0....0..0..0..0..0..1..1..1....0..1..1..0..0..0..1..0
..1..0..0..1..0..1..1..0....1..0..1..1..0..1..1..1....0..0..0..1..0..1..1..1
..0..0..0..0..0..0..1..0....0..0..0..0..1..0..0..1....0..1..0..1..1..1..1..1

Crossrefs

Cf. A255036

Sequence in context: A072959 A048527 A255041 * A256952 A234173 A226287

Adjacent sequences: A255031 A255032 A255033 * A255035 A255036 A255037

Keyword

nonn

Author

R. H. Hardin, Feb 13 2015

Status

approved