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A251908 Number of (n+2)X(3+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 4 or 5 1
910694, 31829596, 1346875728, 55159959296, 2346358649878, 101807826393734, 4420398895384686, 192602542367733540, 8418267573435319288, 368433628593845084758, 16142671439953491545132, 707955307957030465592450 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A251909

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..37

EXAMPLE

Some solutions for n=1

..1..1..1..1..1....1..1..1..1..1....1..1..3..1..1....1..1..1..1..1

..1..1..1..1..3....1..1..1..1..1....1..1..1..1..3....3..1..1..1..1

..1..1..1..3..1....1..3..1..1..1....1..1..1..3..1....1..1..3..1..1

CROSSREFS

Sequence in context: A141461 A035793 A102503 * A186608 A236617 A237155

Adjacent sequences:  A251905 A251906 A251907 * A251909 A251910 A251911

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 10 2014

STATUS

approved

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Last modified May 20 03:10 EDT 2019. Contains 323412 sequences. (Running on oeis4.)