A241309 Number of 4Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4

25, 12, 116, 330, 1462, 5757, 22343, 79043, 304799, 1330380, 4460064, 16854505, 67201703, 234900475, 920572773, 3459723044, 12626410604, 48658166127, 178994028939, 683367868924, 2559363759045, 9527974589307, 36279708405734

Offset

1,1

Comments

Row 4 of A241306

Links

R. H. Hardin, Table of n, a(n) for n = 1..154

Example

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

Crossrefs

Sequence in context: A097440 A040603 A033345 * A342114 A093539 A339773

Adjacent sequences: A241306 A241307 A241308 * A241310 A241311 A241312

Keyword

nonn

Author

R. H. Hardin, Apr 18 2014

Status

approved