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A239843 Number of n X n 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of the elements above it or two plus the sum of the elements diagonally to its northwest, modulo 4 0
2, 8, 68, 1613, 94613, 15039319, 6712505927 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A239849
LINKS
EXAMPLE
Some solutions for n=4
..0..3..3..0....3..3..0..0....0..0..3..3....0..0..0..3....0..0..3..3
..3..1..3..3....3..2..0..0....3..3..1..2....0..3..3..1....0..3..1..3
..3..3..0..1....0..0..2..0....3..3..0..0....3..1..3..3....3..1..2..0
..0..3..1..2....0..0..2..2....0..0..2..0....3..3..0..1....3..3..1..1
CROSSREFS
Sequence in context: A113087 A322495 A332637 * A099729 A123117 A330676
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 28 2014
STATUS
approved

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Last modified March 19 04:26 EDT 2024. Contains 370952 sequences. (Running on oeis4.)