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A083316
a(n) = (2*6^n - (5^n - 3^n))/2.
1
1, 5, 28, 167, 1024, 6335, 39208, 241967, 1487584, 9110975, 55612888, 338471567, 2054977744, 12451139615, 75314797768, 454933369967, 2744837485504, 16545254288255, 99652801745848, 599823577977167, 3608476467634864
OFFSET
0,2
COMMENTS
Binomial transform of A083315.
FORMULA
a(n) = (2*6^n - (5^n - 3^n))/2.
G.f.: (1-9x+21x^2)/((1-3x)(1-5x)(1-6x)).
E.g.f.: (2*exp(6x) - exp(5x) + exp(3x))/2.
CROSSREFS
Sequence in context: A090040 A025174 A371778 * A027284 A069731 A272046
KEYWORD
easy,nonn
AUTHOR
Paul Barry, Apr 24 2003
STATUS
approved