A240415 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, modulo 4

25, 139, 1526, 11670, 74655, 773196, 5429095, 41264901, 368615027, 2585037182, 21489185687, 174817614437, 1291058701632, 10769864002354, 83962833112352, 648485033420957, 5301967970926934, 40960040109260355, 323977574986307633

Offset

1,1

Comments

Row 4 of A240412

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A156158 A195977 A233368 * A113524 A147505 A147360

Adjacent sequences: A240412 A240413 A240414 * A240416 A240417 A240418

Keyword

nonn

Author

R. H. Hardin, Apr 04 2014

Status

approved