A251921 Number of (n+2)X(6+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

8932, 19964, 59760, 253148, 1316762, 6752446, 36065236, 196441982, 1066828482, 5808060274, 31696059176, 172926905548, 943553450318, 5149387529980, 28102890775706, 153374231326410, 837067405353424, 4568448157102758

Offset

1,1

Comments

Column 6 of A251923

Links

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

Example

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

Crossrefs

Sequence in context: A087167 A290811 A259631 * A217604 A218389 A180298

Adjacent sequences: A251918 A251919 A251920 * A251922 A251923 A251924

Keyword

nonn

Author

R. H. Hardin, Dec 11 2014

Status

approved