A251462 Number of (n+1)X(3+1) 0..2 arrays with every 2X2 subblock summing to a prime and those sums nondecreasing in every row and column

602, 3142, 15719, 62309, 239572, 809934, 2678350, 8222849, 24796090, 71644353, 203613185, 565710173, 1545775344, 4185949130, 11136965910, 29652176113, 77452013880, 203909911308, 525772216775, 1373878022187, 3509862980888

Offset

1,1

Comments

Column 3 of A251467

Links

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

R. H. Hardin, Empirical recurrence of order 61

Formula

Empirical recurrence of order 61 (see link above)

Example

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

Crossrefs

Sequence in context: A363830 A045941 A268588 * A356893 A281561 A184193

Adjacent sequences: A251459 A251460 A251461 * A251463 A251464 A251465

Keyword

nonn

Author

R. H. Hardin, Dec 02 2014

Status

approved