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A239981 Number of nX3 0..3 arrays with no element equal to zero plus the sum of elements to its left or two plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4 1
1, 4, 13, 56, 261, 935, 4113, 16724, 63746, 275188, 1085962, 4300307, 18095718, 71121297, 287888587, 1186770242, 4693927215, 19155022357, 77909148678, 310802944863, 1269055778212, 5125935099711, 20593563815344, 83875501530044 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 3 of A239986
LINKS
EXAMPLE
Some solutions for n=4
..3..0..0....3..0..0....3..0..0....3..0..0....3..0..0....3..0..0....3..0..0
..3..1..3....3..1..3....3..1..3....2..3..0....3..1..3....2..1..0....2..3..0
..2..1..2....3..1..3....2..1..0....2..0..0....3..2..3....2..0..0....2..0..1
..3..2..0....2..1..2....3..2..3....3..2..0....2..3..3....2..1..1....3..0..1
CROSSREFS
Sequence in context: A121076 A121070 A163070 * A243549 A344418 A159595
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 30 2014
STATUS
approved

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Last modified July 22 00:08 EDT 2024. Contains 374478 sequences. (Running on oeis4.)