A251922 Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and column sum 2 4 5 or 7 and every diagonal and antidiagonal sum not 2 4 5 or 7

12872, 34396, 153792, 856022, 5742474, 36065236, 249690188, 1610617806, 11148308670, 71796251804, 499209800968, 3217851653774, 22340736113682, 143989452210488, 1000381251221086, 6447937099979436, 44784252890865612

Offset

1,1

Comments

Column 7 of A251923

Links

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

Example

Some solutions for n=3
..0..2..0..2..3..2..0..2..0....0..1..3..1..3..1..0..1..3
..2..0..2..0..2..0..2..3..2....1..3..1..0..1..3..1..3..1
..0..2..0..2..0..2..0..2..0....3..1..0..1..3..1..3..1..3
..2..3..2..0..2..3..2..0..2....1..3..1..3..1..0..1..3..1
..0..2..3..2..0..2..0..2..0....3..1..3..1..3..1..0..1..3

Crossrefs

Sequence in context: A031805 A244171 A245793 * A184453 A233936 A360836

Adjacent sequences: A251919 A251920 A251921 * A251923 A251924 A251925

Keyword

nonn

Author

R. H. Hardin, Dec 11 2014

Status

approved