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A251777 Number of (n+2)X(6+2) 0..3 arrays with every 3X3 subblock row and column sum 3 or 6 and every diagonal and antidiagonal sum not 3 or 6 1
27242, 430730, 2861058, 16580426, 247384810, 1752287522, 10300749962, 154175434186, 1105860243970, 6575712526154, 98212453983210, 709383209384994, 4239352141271690, 63255463614004042, 458400029991568130 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 6 of A251779
LINKS
FORMULA
Empirical recurrence of order 85 (see link above)
EXAMPLE
Some solutions for n=1
..2..0..1..2..0..1..2..3....3..0..0..3..0..3..0..0....0..3..3..0..0..3..0..3
..0..3..3..0..3..3..0..3....2..0..1..2..3..1..2..3....1..0..2..1..3..2..1..0
..1..3..2..1..0..2..1..0....1..3..2..1..0..2..1..3....2..3..1..2..0..1..2..3
CROSSREFS
Sequence in context: A216943 A250852 A157820 * A032746 A099230 A267706
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 08 2014
STATUS
approved

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Last modified May 29 22:36 EDT 2024. Contains 372954 sequences. (Running on oeis4.)