A232427 Number of (n+1)X(3+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or vertically

64, 1632, 33708, 650696, 14465384, 313201804, 6514702216, 139122934752, 2976033930696, 63123128916304, 1342119519069652, 28587959355513900, 608076772769769316, 12933230082531044888, 275207426260812160768

Offset

1,1

Comments

Column 3 of A232431

Links

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

R. H. Hardin, Empirical recurrence of order 55

Formula

Empirical recurrence of order 55 (see link above)

Example

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

Crossrefs

Sequence in context: A224205 A162994 A225981 * A194496 A297092 A284340

Adjacent sequences: A232424 A232425 A232426 * A232428 A232429 A232430

Keyword

nonn

Author

R. H. Hardin, Nov 23 2013

Status

approved