A240249 Number of nX7 0..3 arrays with no element equal to the sum of elements to its left or the sum of elements above it or the sum of the elements diagonally to its northwest or the sum of the elements antidiagonally to its northeast, modulo 4

372, 1578, 16600, 189430, 2077950, 26986182, 326181996, 4661555368, 62462952854

Offset

1,1

Comments

Column 7 of A240250

Links

Table of n, a(n) for n=1..9.

Example

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

Crossrefs

Sequence in context: A161362 A203924 A004021 * A200885 A161361 A369822

Adjacent sequences: A240246 A240247 A240248 * A240250 A240251 A240252

Keyword

nonn

Author

R. H. Hardin, Apr 03 2014

Status

approved