A252118 Number of (n+2)X(1+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum less than 6

41092, 1091710, 30699048, 845139814, 23117206344, 633958684608, 17408568411762, 477854088388692, 13112744813104416, 359859098814488430, 9876406203110032122, 271053452527870349598, 7438853002317194594032

Offset

1,1

Comments

Column 1 of A252121

Links

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

Example

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

Crossrefs

Sequence in context: A074379 A237395 A252121 * A250819 A234546 A344456

Adjacent sequences: A252115 A252116 A252117 * A252119 A252120 A252121

Keyword

nonn

Author

R. H. Hardin, Dec 14 2014

Status

approved