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A220941 Number of nX4 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor 1
4, 2056, 291080, 43253705, 6388528170, 944223520057, 139549646254609, 20624731224928936, 3048237966941788465, 450515041275014945368, 66583978433834919848004, 9840795003881912664407189 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A220943

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..14

EXAMPLE

Some solutions for n=3

..0..1..0..1....0..0..0..0....0..2..1..0....0..2..0..3....0..0..0..0

..2..1..1..4....2..4..1..2....0..2..0..0....0..3..1..1....1..5..2..1

..0..1..1..0....1..2..0..0....1..3..3..0....1..1..0..0....0..2..1..0

CROSSREFS

Sequence in context: A004815 A198907 A207863 * A012869 A172941 A180993

Adjacent sequences:  A220938 A220939 A220940 * A220942 A220943 A220944

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 25 2012

STATUS

approved

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Last modified October 19 16:17 EDT 2019. Contains 328223 sequences. (Running on oeis4.)