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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 R. H. Hardin, Table of n, a(n) for n = 1..210 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 Adjacent sequences: A239978 A239979 A239980 * A239982 A239983 A239984 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.)