A252137 Number of (n+2)X(6+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 4 6 or 7

1864, 8684, 62277, 409028, 2670175, 17562129, 115183261, 755607636, 4967204787, 32613906904, 214022771560, 1405186467767, 9227158423609, 60580408167599, 397722666714982, 2611240940819477, 17144272724693612, 112560751779945146

Offset

1,1

Comments

Column 6 of A252139

Links

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

R. H. Hardin, Empirical recurrence of order 72

Formula

Empirical recurrence of order 72 (see link above)

Example

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

Crossrefs

Sequence in context: A054815 A295995 A237257 * A204889 A204885 A231029

Adjacent sequences: A252134 A252135 A252136 * A252138 A252139 A252140

Keyword

nonn

Author

R. H. Hardin, Dec 14 2014

Status

approved