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A217342 Number of nX4 arrays of occupancy after each element moves to some horizontal or vertical neighbor but without 2-loops 1
0, 38, 2389, 120908, 5756974, 267947653, 12350550690, 566789163488, 25958450760849, 1187754678765443, 54322924296499637, 2483989094275943631, 113572728843260660640, 5192525516036292143928, 237396286736491907178433 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 4 of A217346
LINKS
EXAMPLE
Some solutions for n=3
..0..1..2..0....0..0..1..0....0..0..2..1....1..2..2..1....1..2..2..1
..2..2..3..1....1..0..2..2....1..2..2..2....1..0..1..0....1..0..2..1
..0..0..1..0....1..2..2..1....0..1..0..1....1..1..2..0....0..0..2..0
CROSSREFS
Sequence in context: A217224 A272036 A055605 * A319519 A221111 A322331
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 01 2012
STATUS
approved

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Last modified June 23 21:27 EDT 2024. Contains 373654 sequences. (Running on oeis4.)