A251339 Number of (n+1)X(4+1) 0..3 arrays with every 2X2 subblock summing to a nonzero multiple of 3

13275, 189129, 3014066, 55048995, 1151715397, 27005232676, 687109914883, 18427859055437, 510268616367258, 14398478349467699, 410803016154228437, 11796821936379895236, 340059287206039260739, 9824866995580418794877

Offset

1,1

Comments

Column 4 of A251343

Links

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

R. H. Hardin, Empirical recurrence of order 41

Formula

Empirical recurrence of order 41 (see link above)

Example

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

Crossrefs

Sequence in context: A345583 A345840 A031620 * A318252 A034625 A283155

Adjacent sequences: A251336 A251337 A251338 * A251340 A251341 A251342

Keyword

nonn

Author

R. H. Hardin, Dec 01 2014

Status

approved