A234407 Number of (n+1)X(2+1) 0..6 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 12 and no adjacent elements equal

2540, 38236, 578080, 9552088, 160156724, 2732474648, 46838063500, 805631496848, 13873456358988, 239079417935660, 4121153439939600, 71049641967894584, 1224988034617402112, 21121099804239729456, 364172469147540913848

Offset

1,1

Comments

Column 2 of A234412

Links

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

R. H. Hardin, Empirical recurrence of order 52

Formula

Empirical recurrence of order 52 (see link above)

Example

Some solutions for n=2
..6..5..0....2..6..2....3..0..5....1..2..0....0..5..0....2..0..6....6..5..0
..1..6..5....0..2..0....2..5..6....0..6..1....3..6..4....6..3..5....1..6..5
..0..5..0....4..0..4....3..0..2....4..5..0....4..1..0....4..0..6....6..5..0

Crossrefs

Sequence in context: A254014 A254888 A248997 * A135924 A250686 A307473

Adjacent sequences: A234404 A234405 A234406 * A234408 A234409 A234410

Keyword

nonn

Author

R. H. Hardin, Dec 25 2013

Status

approved