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A214103 Number of 0..2 colorings of a 4X(n+1) array circular in the n+1 direction with new values 0..2 introduced in row major order 1
27, 8, 771, 1080, 29540, 79968, 1241355, 4807928, 54733587, 263068168, 2491174972, 13706830176, 115900489291, 694854606408, 5473717429995, 34661887488856, 261125940394148, 1712290280769888, 12540109248690731, 84080392667812248 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A214101

LINKS

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

FORMULA

Empirical: a(n) = 8*a(n-1) +26*a(n-2) -304*a(n-3) +304*a(n-4) +2016*a(n-5) -3991*a(n-6) -2616*a(n-7) +9702*a(n-8) -2064*a(n-9) -6120*a(n-10) +2880*a(n-11)

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A218014 A040710 A040708 * A097441 A040707 A040706

Adjacent sequences:  A214100 A214101 A214102 * A214104 A214105 A214106

KEYWORD

nonn

AUTHOR

R. H. Hardin Jul 04 2012

STATUS

approved

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Last modified June 25 22:16 EDT 2019. Contains 324358 sequences. (Running on oeis4.)