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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A251459.

LINKS

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

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

Adjacent sequences:  A251455 A251456 A251457 * A251459 A251460 A251461

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 02 2014

STATUS

approved

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Last modified August 19 20:38 EDT 2022. Contains 356231 sequences. (Running on oeis4.)