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A238990 Number of n X n 0..3 arrays with no element equal to two plus the sum of elements to its left or two plus the sum of the elements above it, modulo 4 0
3, 41, 2365, 638779, 860394281, 5929702056895, 212231595626785699, 39651723245559240187169, 38780926340204177325324747343 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A238997
LINKS
EXAMPLE
Some solutions for n=3
..0..3..3....0..0..0....0..1..0....0..0..0....1..0..1....0..0..1....0..0..3
..0..3..2....0..1..0....3..0..0....0..1..0....1..1..1....0..1..2....0..3..3
..0..3..0....3..2..0....0..0..0....1..2..0....1..0..2....0..0..0....3..3..2
CROSSREFS
Sequence in context: A147797 A139161 A262644 * A192888 A239039 A228456
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 08 2014
STATUS
approved

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Last modified June 17 09:14 EDT 2024. Contains 373444 sequences. (Running on oeis4.)