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A252039 T(n,k)=Number of (n+2)X(k+2) 0..4 arrays with every 3X3 subblock row and column sum nonprime and every diagonal and antidiagonal sum prime 7
10991, 31774, 31774, 53776, 55941, 53776, 112929, 84953, 84953, 112929, 327823, 183494, 43475, 183494, 327823, 1080979, 710758, 85570, 85570, 710758, 1080979, 2183207, 2297641, 309509, 242893, 309509, 2297641, 2183207, 5486634, 9138994 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
....10991.....31774.....53776....112929......327823.....1080979.....2183207
....31774.....55941.....84953....183494......710758.....2297641.....9138994
....53776.....84953.....43475.....85570......309509.....1083611.....2760880
...112929....183494.....85570....242893......958171.....3353508....10165927
...327823....710758....309509....958171.....5198219....30060975....97038957
..1080979...2297641...1083611...3353508....30060975...248966785...759807163
..2183207...9138994...2760880..10165927....97038957...759807163..2810979165
..5486634..27977649..11408435..43093018...598042259..8322287804.29562415507
.16631787.118955569..45212106.160833703..3791553994.80058549769
.51672060.380855595.116642072.479755164.11804694219
LINKS
EXAMPLE
Some solutions for n=3 k=4
..4..0..0..0..1..0....1..1..4..1..3..2....4..1..3..0..3..1....2..1..1..2..1..3
..1..4..1..3..4..3....4..2..0..2..2..0....4..3..3..0..1..3....0..4..2..0..2..4
..3..4..3..1..4..3....1..1..2..1..1..2....1..4..4..1..4..4....2..1..1..2..1..1
..0..1..0..0..1..0....1..1..2..1..1..4....4..3..3..0..3..1....2..1..1..2..1..1
..3..4..1..3..4..1....4..2..0..2..4..0....4..3..3..0..1..3....0..4..4..0..4..4
CROSSREFS
Sequence in context: A270115 A335082 A104323 * A252033 A352751 A266983
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Dec 12 2014
STATUS
approved

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Last modified March 4 05:23 EST 2024. Contains 370522 sequences. (Running on oeis4.)