A232157 Number of nX4 0..3 arrays with every 0 next to a 1, every 1 next to a 2 and every 2 next to a 3 horizontally, vertically or antidiagonally, and no adjacent values equal

8, 218, 1284, 7770, 46702, 286770, 1767266, 10830650, 66701686, 410364610, 2522566124, 15524673872, 95489164864, 587352257166, 3613537440642, 22227593479382, 136734516680534, 841147631122416, 5174280907720634

Offset

1,1

Comments

Column 4 of A232161

Links

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

R. H. Hardin, Empirical recurrence of order 94

Formula

Empirical recurrence of order 94 (see link above)

Example

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

Crossrefs

Sequence in context: A188680 A329304 A352471 * A305517 A298964 A298455

Adjacent sequences: A232154 A232155 A232156 * A232158 A232159 A232160

Keyword

nonn

Author

R. H. Hardin, Nov 19 2013

Status

approved