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A081679 a(n)=(6^n-5^n-4^n-3^n+4*2^n)/2. 1
1, 1, 1, 16, 199, 1756, 13231, 91876, 608959, 3922396, 24798511, 154802836, 957674719, 5885660236, 35993747791, 219289723396, 1332092132479, 8073205753276, 48838076777071, 295005107805556, 1779844007102239 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

COMMENTS

Inverse binomial transform of A081680

LINKS

Table of n, a(n) for n=0..20.

Index entries for linear recurrences with constant coefficients, signature (20,-155,580,-1044,720). - Bruno Berselli, Dec 15 2010

FORMULA

G.f.: (1-19*x+136*x^2-429*x^3+498*x^4)/((1-2*x)*(1-3*x)*(1-4*x)*(1-5*x)*(1-6*x)). - Bruno Berselli, Dec 15 2010

CROSSREFS

Sequence in context: A153885 A016226 A154240 * A154249 A226869 A257289

Adjacent sequences:  A081676 A081677 A081678 * A081680 A081681 A081682

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Mar 30 2003

STATUS

approved

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Last modified July 21 02:02 EDT 2019. Contains 325189 sequences. (Running on oeis4.)