A239655 Number of 7Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or two plus the sum of the elements above it, modulo 4

258, 75540, 21813374, 6219477628, 1778793691226, 506611939408296, 144633234041629586, 41228312635698988592, 11764207025789049116296, 3354764803854586870996290, 957059647333850993834828574

Offset

1,1

Comments

Row 7 of A239649

Links

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

Example

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

Crossrefs

Sequence in context: A271038 A097734 A121915 * A246243 A066129 A101521

Adjacent sequences: A239652 A239653 A239654 * A239656 A239657 A239658

Keyword

nonn

Author

R. H. Hardin, Mar 23 2014

Status

approved