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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 1
2908, 24182, 183485, 1096596, 6216665, 30592799, 146035292, 638001419, 2737224051, 11079334278, 44353044487, 170687762327, 652521483414, 2427683848801, 8998599121783, 32733059851689, 118872959422881 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 3 of A251481
LINKS
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 02 2014
STATUS
approved

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Last modified March 19 07:04 EDT 2024. Contains 370953 sequences. (Running on oeis4.)