A251463 Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock summing to a prime and those sums nondecreasing in every row and column.

1908, 11134, 62309, 268559, 1125843, 4053903, 14306546, 46070347, 145984578, 437418593, 1291704815, 3690118027, 10390300382, 28744898692, 78318248671, 211976616993, 564325050038, 1504527451304, 3939345742309, 10392736660538

Offset

1,1

Comments

Column 4 of A251467

Links

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

R. H. Hardin, Empirical recurrence of order 77

Formula

Empirical recurrence of order 77 (see link above)

Example

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

Crossrefs

Sequence in context: A355891 A362444 A206124 * A184194 A209551 A238059

Adjacent sequences: A251460 A251461 A251462 * A251464 A251465 A251466

Keyword

nonn

Author

R. H. Hardin, Dec 02 2014

Status

approved