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A251454
Number of (n+1) X (3+1) 0..3 arrays with every 2 X 2 subblock summing to a prime.
1
6398, 194586, 5783416, 172965058, 5162094982, 154267520858, 4606843590302, 137657116629832, 4111638505603610, 122852558520079282, 3669798382143064858, 109646194005440865702, 3275476445946738392702, 97861845165754237937150
OFFSET
1,1
COMMENTS
Column 3 of A251459.
FORMULA
Empirical recurrence of order 99 (see link above).
EXAMPLE
Some solutions for n=2
..0..1..1..0....0..0..3..0....0..2..3..0....0..0..1..1....0..3..2..1
..3..1..0..1....1..1..1..1....1..2..0..0....1..1..1..2....2..0..0..2
..0..3..1..1....2..3..2..3....3..1..2..3....1..2..3..1....0..0..2..1
CROSSREFS
Cf. A251459.
Sequence in context: A253825 A186068 A186064 * A237954 A269827 A270056
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 02 2014
STATUS
approved