A252127 Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum equal to 0 3 4 6 or 7

4671, 34891, 263585, 566817, 4795018, 40402457, 82061030, 744011930, 6560422082, 12886451653, 121140212742, 1089930104949, 2105040371507, 20135140818930, 182800461274177, 350087883324934, 3376781256447826, 30783967988225254

Offset

1,1

Comments

Column 5 of A252130

Links

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

R. H. Hardin, Empirical recurrence of order 67

Formula

Empirical recurrence of order 67 (see link above)

Example

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

Crossrefs

Sequence in context: A048131 A062626 A204489 * A188364 A236014 A202431

Adjacent sequences: A252124 A252125 A252126 * A252128 A252129 A252130

Keyword

nonn

Author

R. H. Hardin, Dec 14 2014

Status

approved