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A204048 Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..3 introduced in row major order 0
1379, 112362, 5257444, 316144367, 18962117027, 1065898305547, 58142833651117, 3205754177083715, 172892123818421614, 9330670178760104074 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A204056
LINKS
EXAMPLE
Some solutions for n=3
..0..0..1..0..0....0..0..1..1..0....0..1..0..2..3....0..0..0..0..0
..0..0..0..0..0....0..0..0..0..0....0..0..1..3..2....0..0..0..0..0
..0..0..0..0..0....0..0..0..0..0....0..0..3..1..0....1..0..0..0..1
..2..0..0..0..3....0..0..0..0..1....0..3..0..3..1....1..0..0..0..0
..3..2..0..0..3....1..0..0..0..1....3..1..3..0..3....0..2..0..0..0
CROSSREFS
Sequence in context: A323814 A204056 A204049 * A209791 A051114 A139667
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 09 2012
STATUS
approved

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Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)