A255753 Number of (n+2)X(5+2) 0..1 arrays with every 3X3 subblock sum of the medians of the diagonal and antidiagonal minus the two sums of the central row and column nondecreasing horizontally, vertically and ne-to-sw antidiagonally

99200, 180619, 197284, 203503, 196744, 237248, 300504, 402972, 543216, 719217, 966484, 1367292, 1914280, 2603820, 3577560, 5163800, 7335400, 10077720, 13956840, 20285960, 28956520, 39909960, 55410600, 80711240, 115377640

Offset

1,1

Comments

Column 5 of A255756

Links

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

Formula

Empirical: a(n) = 2*a(n-1) -a(n-2) +4*a(n-4) -8*a(n-5) +4*a(n-6) for n>18

Example

Some solutions for n=3
..0..1..1..1..1..1..1....0..1..1..1..0..0..0....0..0..1..1..1..1..1
..1..1..1..0..1..0..0....0..1..1..0..0..1..1....0..1..1..0..0..0..0
..1..0..1..0..0..0..1....0..0..0..1..1..0..0....0..1..0..0..0..0..0
..1..0..0..0..0..0..0....0..1..0..0..0..0..0....0..0..0..0..0..0..0
..1..1..0..0..0..0..1....0..0..0..0..0..1..1....0..0..0..0..0..0..0

Crossrefs

Cf. A255756

Sequence in context: A093778 A234494 A255760 * A254842 A339936 A348275

Adjacent sequences: A255750 A255751 A255752 * A255754 A255755 A255756

Keyword

nonn

Author

R. H. Hardin, Mar 05 2015

Status

approved