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A183663 Number of (n+1)X(n+1) 0..6 arrays with every 2X2 subblock summing to 12 0
231, 5215, 100935, 1803007, 30722151 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A183672

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions for 3X3

..6..4..6....0..5..0....4..1..4....0..4..0....5..1..5....2..3..2....4..4..3

..1..1..1....3..4..3....3..4..3....5..3..5....4..2..4....1..6..1....0..4..1

..6..4..6....3..2..3....3..2..3....0..4..0....1..5..1....4..1..4....5..3..4

CROSSREFS

Sequence in context: A211717 A029569 A152102 * A201957 A152500 A066370

Adjacent sequences: A183660 A183661 A183662 * A183664 A183665 A183666

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 06 2011

STATUS

approved

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Last modified November 28 10:02 EST 2022. Contains 358411 sequences. (Running on oeis4.)