A252349 Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 3 5 6 or 8 and every 3X3 diagonal and antidiagonal sum equal to 0 3 5 6 or 8

4013, 12419, 42345, 137488, 592230, 2400740, 9477253, 42122229, 176745069, 739671776, 3297306209, 14026096272, 60863465038, 271202729485, 1164405089372, 5181559811105, 23087264478573, 99773391872257, 451691184105558

Offset

1,1

Comments

Column 5 of A252352

Links

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

R. H. Hardin, Empirical recurrence of order 62

Formula

Empirical recurrence of order 62 (see link above)

Example

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

Crossrefs

Sequence in context: A235307 A193552 A107285 * A282128 A099229 A205889

Adjacent sequences: A252346 A252347 A252348 * A252350 A252351 A252352

Keyword

nonn

Author

R. H. Hardin, Dec 16 2014

Status

approved