A185855 Number of (n+1)X9 0..2 arrays with no 2X2 subblock diagonal sum less antidiagonal sum equal to any horizontal or vertical neighbor 2X2 subblock diagonal sum less antidiagonal sum

145808838, 475728999902, 1594644874059338, 5314583162402080764, 17779987852107633361760

Offset

1,1

Comments

Column 8 of A185856

Links

Table of n, a(n) for n=1..5.

Example

Some solutions for 3X9
..0..0..1..0..0..2..1..2..1....0..0..1..0..0..2..2..2..0
..0..0..0..0..0..0..0..0..0....0..0..0..0..0..0..1..0..1
..0..1..1..0..1..0..0..1..0....0..1..1..0..1..1..1..1..1

Crossrefs

Sequence in context: A224637 A224638 A224642 * A335399 A226970 A212470

Adjacent sequences: A185852 A185853 A185854 * A185856 A185857 A185858

Keyword

nonn

Author

R. H. Hardin Feb 05 2011

Status

approved