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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

Table of n, a(n) for n=1..10.

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

Adjacent sequences:  A204045 A204046 A204047 * A204049 A204050 A204051

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 09 2012

STATUS

approved

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Last modified September 15 14:36 EDT 2019. Contains 327078 sequences. (Running on oeis4.)