A251846 Number of (n+2)X(1+2) 0..3 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime

2148, 4953, 15899, 67209, 327193, 1697028, 9016304, 48280085, 259123809, 1392132935, 7481800749, 40211989018, 216132151786, 1161698250394, 6244080094399, 33561655362846, 180392638316345, 969604161599181

Offset

1,1

Comments

Column 1 of A251852

Links

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

Example

Some solutions for n=4
..3..2..0....1..3..1....1..0..1....3..1..1....1..1..3....1..3..3....1..0..1
..2..3..2....1..1..1....1..1..0....1..1..1....1..1..1....1..3..3....1..1..3
..2..0..1....1..1..1....3..1..1....3..1..1....1..1..1....1..1..1....1..1..1
..3..0..0....1..1..1....1..1..1....1..1..1....1..1..1....3..1..1....3..1..1
..2..2..1....3..1..3....3..3..1....1..1..1....1..3..3....1..3..3....1..1..3
..0..3..2....1..3..3....3..1..3....1..3..3....3..1..1....3..3..1....1..3..3

Crossrefs

Sequence in context: A251870 A291135 A251852 * A236150 A252126 A192771

Adjacent sequences: A251843 A251844 A251845 * A251847 A251848 A251849

Keyword

nonn

Author

R. H. Hardin, Dec 09 2014

Status

approved