A241285 Number of 3Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or zero plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4

10, 9, 41, 126, 224, 934, 2741, 5225, 20537, 55667, 113588, 422541, 1125360, 2473769, 8840311, 23068806, 53641026, 184488860, 476641936, 1157699906, 3848451987, 9887622772, 24862454468, 80220253420, 205811182949, 531847795781

Offset

1,1

Comments

Row 3 of A241283

Links

R. H. Hardin, Table of n, a(n) for n = 1..170

Example

Some solutions for n=4
..3..3..2..2....3..3..2..3....3..3..2..3....3..2..3..3....3..3..2..3
..2..1..1..0....2..1..3..0....2..1..3..0....2..1..1..2....2..1..1..2
..2..2..0..0....3..1..3..2....3..1..0..0....2..0..2..2....3..2..0..3

Crossrefs

Sequence in context: A271973 A237114 A217412 * A052196 A243035 A070252

Adjacent sequences: A241282 A241283 A241284 * A241286 A241287 A241288

Keyword

nonn

Author

R. H. Hardin, Apr 18 2014

Status

approved