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A214115 Number of 0..3 colorings of a 4X(n+1) array circular in the n+1 direction with new values 0..3 introduced in row major order 1
172, 1331, 110985, 3008980, 136579852, 4797577911, 191154162535, 7146408189140, 275880367771522, 10477887715882961, 401257797241430275, 15301725709872289480, 584778458159088101962, 22323683135830513164011 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A214112

LINKS

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

FORMULA

Empirical: a(n) = 26*a(n-1) +793*a(n-2) -10672*a(n-3) -111685*a(n-4) +1555742*a(n-5) +3279675*a(n-6) -80896036*a(n-7) +42501359*a(n-8) +1864752866*a(n-9) -2747661047*a(n-10) -22752052704*a(n-11) +41970382902*a(n-12) +159827903260*a(n-13) -310989873234*a(n-14) -665904810616*a(n-15) +1268829519909*a(n-16) +1620764697790*a(n-17) -2947553967077*a(n-18) -2132419325552*a(n-19) +3856072745271*a(n-20) +1195236104310*a(n-21) -2617797795489*a(n-22) +77268263580*a(n-23) +689877538245*a(n-24) -233806181994*a(n-25) +22293440379*a(n-26)

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A234998 A234992 A213992 * A250968 A264213 A250340

Adjacent sequences:  A214112 A214113 A214114 * A214116 A214117 A214118

KEYWORD

nonn

AUTHOR

R. H. Hardin Jul 04 2012

STATUS

approved

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Last modified May 21 03:13 EDT 2022. Contains 353886 sequences. (Running on oeis4.)