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A097790 a(n)=5a(n-1)+C(n+3,3),n>0, a(0)=1. 1
1, 9, 55, 295, 1510, 7606, 38114, 190690, 953615, 4768295, 23841761, 119209169, 596046300, 2980232060, 14901160980, 74505805716, 372529029549, 1862645148885, 9313225745755, 46566128730315, 232830643653346 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

Partial sums of A052244.

FORMULA

G.f. : 1/((1-5x)(1-x)^4)); a(n)=5^(n+4)/256-(32n^3+312n^2+1012n+1107)/768; a(n)=sum{k=0..n, binomial(n+4, k+4)4^k }.

CROSSREFS

Sequence in context: A030053 A072844 A026857 * A183805 A037578 A096191

Adjacent sequences:  A097787 A097788 A097789 * A097791 A097792 A097793

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Aug 24 2004

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Last modified February 16 21:51 EST 2012. Contains 205978 sequences.