A252164 Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 2 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 2 3 4 6 or 7

12522, 3749, 9178, 26129, 90638, 282255, 874123, 3133532, 9855158, 31190308, 113533703, 358503838, 1162386053, 4246934635, 13490550259, 44489156575, 163191377759, 519719587757, 1738519434247, 6387692714840, 20392552972439

Offset

1,1

Comments

Column 5 of A252167

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=4
..3..3..1..3..3..1..3....3..0..3..0..3..0..3....1..0..3..1..3..0..1
..2..2..3..2..2..3..2....0..3..1..3..0..3..1....0..2..2..3..2..2..0
..2..2..3..2..2..0..2....3..0..3..0..3..0..3....3..2..2..3..2..2..3
..3..0..1..3..3..1..3....0..3..0..3..0..3..0....1..3..3..1..3..3..1
..2..2..3..2..2..3..2....3..0..3..0..3..0..3....0..2..2..3..2..2..0
..2..2..0..2..2..0..2....0..3..0..3..0..3..1....3..2..2..3..2..2..3

Crossrefs

Sequence in context: A220026 A349044 A231956 * A045217 A298313 A225151

Adjacent sequences: A252161 A252162 A252163 * A252165 A252166 A252167

Keyword

nonn

Author

R. H. Hardin, Dec 14 2014

Status

approved