A239408 Number of 4Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of the elements above it, modulo 4

28, 698, 16449, 394509, 9340070, 222457036, 5277728354, 125489197292, 2979675864286, 70809806218933, 1681881988746468, 39960823740980549, 949269180927265463, 22552572727646416085, 535760871479260663596

Offset

1,1

Comments

Row 4 of A239405

Links

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

R. H. Hardin, Empirical recurrence of order 91

Formula

Empirical recurrence of order 91 (see link above)

Example

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

Crossrefs

Sequence in context: A278805 A160141 A331476 * A215857 A185987 A004293

Adjacent sequences: A239405 A239406 A239407 * A239409 A239410 A239411

Keyword

nonn

Author

R. H. Hardin, Mar 17 2014

Status

approved