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A252368 Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 3 4 6 or 7 1
6954, 48034, 427362, 3482672, 28210122, 230366506, 1875961304, 15268178994, 124565591414, 1015416647500, 8271100837250, 67392594686378, 549259163334800, 4476243984230410, 36476070305839416, 297235618071643728 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A252369
LINKS
EXAMPLE
Some solutions for n=2
..3..2..3..3..3..3..3..3..2....0..0..0..0..0..0..0..0..2
..3..3..3..3..3..3..3..3..3....0..0..0..0..0..0..0..0..0
..3..3..2..3..3..3..3..3..3....2..0..0..2..0..0..0..0..0
..3..3..3..3..3..3..3..2..3....0..0..0..0..0..0..0..0..2
CROSSREFS
Sequence in context: A252432 A072870 A183666 * A237468 A028542 A263287
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 17 2014
STATUS
approved

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Last modified April 22 19:08 EDT 2024. Contains 371906 sequences. (Running on oeis4.)