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A220429
Equals two maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and vertical neighbors in a random 0..3 nX4 array
0
4, 94, 2103, 40412, 735555, 12702453, 213282872, 3513823635
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OFFSET
1,1
COMMENTS
Column 4 of
A220430
LINKS
Table of n, a(n) for n=1..8.
EXAMPLE
Some solutions for n=3
..1..1..0..1....0..1..0..1....1..0..1..1....1..1..0..1....0..1..1..1
..1..0..0..1....0..1..1..1....1..0..1..1....1..0..0..1....1..1..0..0
..0..0..1..1....0..1..1..0....1..1..1..0....0..0..0..1....1..0..1..0
CROSSREFS
Sequence in context:
A061992
A221389
A220374
*
A210857
A220682
A210926
Adjacent sequences:
A220426
A220427
A220428
*
A220430
A220431
A220432
KEYWORD
nonn
AUTHOR
R. H. Hardin
Dec 14 2012
STATUS
approved
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Last modified April 28 04:16 EDT 2024. Contains 372020 sequences. (Running on oeis4.)