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A229532 Number of defective 3-colorings of an nX6 0..2 array connected horizontally, diagonally and antidiagonally with exactly one mistake, and colors introduced in row-major 0..2 order 1
40, 368, 7460, 130854, 2171944, 34811238, 544403948, 8359264560, 126546766896, 1894158617022, 28090954101848, 413405522888606, 6044542909770790, 87888904584082718, 1271780829814090170, 18325726435067557004 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A229534

LINKS

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

FORMULA

Empirical: a(n) = 36*a(n-1) -436*a(n-2) +1854*a(n-3) +340*a(n-4) -19128*a(n-5) +23849*a(n-6) +56184*a(n-7) -108224*a(n-8) -40816*a(n-9) +160400*a(n-10) -34136*a(n-11) -83203*a(n-12) +42628*a(n-13) +6468*a(n-14) -6334*a(n-15) +204*a(n-16) +240*a(n-17) -25*a(n-18) for n>19

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A285919 A234913 A190312 * A252180 A008355 A229716

Adjacent sequences:  A229529 A229530 A229531 * A229533 A229534 A229535

KEYWORD

nonn

AUTHOR

R. H. Hardin Sep 25 2013

STATUS

approved

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Last modified June 16 11:12 EDT 2019. Contains 324152 sequences. (Running on oeis4.)