A255078 Number of (n+2)X(4+2) 0..1 arrays with no 3x3 subblock diagonal sum one and no antidiagonal sum one.

8836, 66049, 630436, 4906225, 40081561, 344028304, 2916864064, 24655280400, 210761791744, 1799944224400, 15351836732164, 131057436673024, 1119460448638921, 9558336427895025, 81622036998229849, 697054867439941924

Offset

1,1

Comments

Column 4 of A255082

Links

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

Example

Some solutions for n=2
..0..1..1..1..1..1....1..1..0..0..1..0....0..1..1..0..1..1....1..1..1..1..1..1
..1..1..1..1..0..1....1..1..1..1..0..0....1..0..1..1..1..1....0..1..1..1..1..1
..0..1..1..1..1..1....1..1..1..0..1..0....1..1..0..1..1..1....1..1..1..0..1..1
..1..1..1..1..0..0....1..0..0..1..1..1....0..1..0..0..1..1....0..0..1..1..1..0

Crossrefs

Cf. A255082

Sequence in context: A186582 A147529 A255089 * A031592 A250010 A064296

Adjacent sequences: A255075 A255076 A255077 * A255079 A255080 A255081

Keyword

nonn

Author

R. H. Hardin, Feb 14 2015

Status

approved