A251476 Number of (n+1)X(2+1) 0..3 arrays with every 2X2 subblock summing to a prime and those sums nondecreasing in every row and column

586, 3904, 24182, 123739, 609565, 2696488, 11697274, 47575204, 191527226, 740673411, 2848714884, 10679966309, 39919058437, 146791696499, 538812135978, 1957471091980, 7102211736792, 25606426267704, 92214319488546

Offset

1,1

Comments

Column 2 of A251481

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..0..1....0..1..3....2..1..3....1..0..2....2..0..2....0..0..1
..1..1..0....2..0..2....1..0..1....2..0..1....0..1..2....0..0..0....2..0..2
..1..0..2....0..3..0....1..3..1....2..3..3....0..1..1....1..1..1....0..0..3
..0..2..1....1..3..1....1..0..3....2..0..1....1..3..2....3..0..3....1..2..2
..0..1..3....1..2..1....3..1..3....2..3..3....0..1..1....3..1..3....1..3..0

Crossrefs

Sequence in context: A020362 A051988 A261263 * A270424 A196888 A343829

Adjacent sequences: A251473 A251474 A251475 * A251477 A251478 A251479

Keyword

nonn

Author

R. H. Hardin, Dec 02 2014

Status

approved