A240197 Number of 7Xn 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 three plus the sum of the elements diagonally to its northwest, modulo 4

15, 358, 10017, 333607, 14022582, 733907809, 43398047802, 2752449791995, 182092505409165, 12353055792220215, 850428778272052568, 59048111282882480477, 4120092662704003963630

Offset

1,1

Comments

Row 7 of A240192

Links

Table of n, a(n) for n=1..13.

Example

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

Crossrefs

Sequence in context: A240375 A202809 A184132 * A012486 A035020 A087330

Adjacent sequences: A240194 A240195 A240196 * A240198 A240199 A240200

Keyword

nonn

Author

R. H. Hardin, Apr 02 2014

Status

approved