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A229457
Number of defective 3-colorings of an nX6 0..2 array connected horizontally and vertically with exactly one mistake and colors introduced in row-major 0..2 order
1
40, 1188, 27313, 573342, 11451686, 221410052, 4182294415, 77626332302, 1421182695065, 25734458996766, 461813205678124, 8225319344357866, 145570937702109584, 2562275384434847728, 44887086267708866341
OFFSET
1,1
COMMENTS
Column 6 of A229460
LINKS
FORMULA
Empirical: a(n) = 60*a(n-1) -1482*a(n-2) +20016*a(n-3) -167163*a(n-4) +924894*a(n-5) -3537110*a(n-6) +9593166*a(n-7) -18693789*a(n-8) +26218062*a(n-9) -26188161*a(n-10) +18139608*a(n-11) -8262712*a(n-12) +2220864*a(n-13) -266256*a(n-14) for n>15
EXAMPLE
Some solutions for n=3
..0..1..1..2..1..2....0..1..2..0..2..0....0..1..2..0..2..1....0..1..2..1..0..1
..1..2..0..1..0..1....1..2..0..2..1..2....1..0..1..0..1..0....1..0..1..2..1..0
..2..1..2..0..2..0....0..0..2..1..0..1....0..1..0..1..0..2....1..2..0..1..0..1
CROSSREFS
Sequence in context: A004385 A349596 A152257 * A331350 A061650 A006101
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 24 2013
STATUS
approved