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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 1
586, 3904, 24182, 123739, 609565, 2696488, 11697274, 47575204, 191527226, 740673411, 2848714884, 10679966309, 39919058437, 146791696499, 538812135978, 1957471091980, 7102211736792, 25606426267704, 92214319488546 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 2 of A251481
LINKS
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 02 2014
STATUS
approved

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Last modified March 29 04:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)