A241438 Number of 4Xn 0..3 arrays with no element equal to one 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 one plus the sum of the elements antidiagonally to its northeast, modulo 4.

7, 3, 97, 515, 1563, 5915, 22712, 76145, 270960, 1073158, 3818620, 13721807, 51728838, 187790119, 699951598, 2604140270, 9348611449, 35299653581, 130303556135, 471759570058, 1773938926867, 6503523325619, 23881500761462

Offset

1,1

Comments

Row 4 of A241435

Links

R. H. Hardin, Table of n, a(n) for n = 1..139

Example

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

Crossrefs

Sequence in context: A183421 A173443 A003723 * A054471 A086453 A320842

Adjacent sequences: A241435 A241436 A241437 * A241439 A241440 A241441

Keyword

nonn

Author

R. H. Hardin, Apr 22 2014

Status

approved