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A239332 Number of n X n 0..3 arrays with no element equal to one plus the sum of elements to its left or three plus the sum of the elements above it, modulo 4 0
2, 31, 2187, 790681, 1527488498, 15397080750829, 808844678734652790, 222534953338562308679099, 320707048341323698139814420023 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A239340
LINKS
EXAMPLE
Some solutions for n=3
..0..2..0....2..0..1....2..2..2....2..0..0....0..2..0....0..2..0....2..1..1
..2..0..0....0..0..2....2..2..0....2..0..2....0..2..0....0..2..0....2..2..2
..2..0..2....2..0..1....0..2..2....0..2..0....0..0..2....0..0..0....0..3..1
CROSSREFS
Sequence in context: A134646 A368354 A197320 * A350940 A244441 A004072
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 16 2014
STATUS
approved

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Last modified June 18 08:27 EDT 2024. Contains 373472 sequences. (Running on oeis4.)