A251477 Number of (n+1)X(3+1) 0..3 arrays with every 2X2 subblock summing to a prime and those sums nondecreasing in every row and column

2908, 24182, 183485, 1096596, 6216665, 30592799, 146035292, 638001419, 2737224051, 11079334278, 44353044487, 170687762327, 652521483414, 2427683848801, 8998599121783, 32733059851689, 118872959422881

Offset

1,1

Comments

Column 3 of A251481

Links

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

R. H. Hardin, Empirical recurrence of order 99

Formula

Empirical recurrence of order 99 (see link above)

Example

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

Crossrefs

Sequence in context: A254183 A254190 A253795 * A210072 A157183 A054829

Adjacent sequences: A251474 A251475 A251476 * A251478 A251479 A251480

Keyword

nonn

Author

R. H. Hardin, Dec 02 2014

Status

approved