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A238993
Number of nX4 0..3 arrays with no element equal to two plus the sum of elements to its left or two plus the sum of the sum of elements above it, modulo 4
1
31, 955, 25601, 638779, 15482441, 370847909, 8839918663, 210298050207, 4998886061169, 118785304972327, 2822242684232115, 67050092047403637, 1592922871540500091, 37842951297176471361, 899028950928529166077
OFFSET
1,1
COMMENTS
Column 4 of A238997
LINKS
EXAMPLE
Some solutions for n=3
..0..3..3..3....0..3..0..0....0..1..0..1....1..0..1..3....1..0..0..0
..1..2..2..0....0..0..0..0....1..0..1..1....0..1..1..2....0..0..0..1
..1..1..1..0....1..2..3..1....0..1..1..2....0..1..2..0....1..1..1..0
CROSSREFS
Sequence in context: A170750 A218733 A084330 * A171336 A200442 A207777
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 08 2014
STATUS
approved