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A251458
Number of (n+1) X (7+1) 0..3 arrays with every 2 X 2 subblock summing to a prime.
1
20039054, 9883202426, 4606843590302, 2183158464447536, 1028696788230851944, 486569802610722280938, 229687326408274791177808, 108605494730585927438945340, 51299121137631000207920371548
OFFSET
1,1
COMMENTS
Column 7 of A251459.
LINKS
EXAMPLE
Some solutions for n=1
..0..0..0..0..2..2..1..1....0..0..0..2..2..1..0..3....0..0..0..0..3..1..0..2
..0..3..2..3..0..1..1..0....0..3..0..0..1..1..0..2....2..3..2..0..0..1..0..3
CROSSREFS
Cf. A251459.
Sequence in context: A103123 A107618 A050945 * A116497 A346685 A133543
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 02 2014
STATUS
approved