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A094213 a(n)=sum(k=0,n,binomial(9*n,9*k)). 0
1, 2, 48622, 9373652, 9263421862, 3433541316152, 2140802758677844, 984101481334553024, 536617781178725122150, 265166261617029717011822, 138567978655457801631498052, 70126939586658252408697345838 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..11.

FORMULA

Let b(n)=a(n)-2^(9*n)/9 then b(n)+246*b(n-1)-13605*b(n-2)+b(n-3)+(-1)^n*3078=0

PROG

(PARI) a(n)=sum(k=0, n, binomial(9*n, 9*k))

CROSSREFS

Cf. A070967, A070782, A070775.

Sequence in context: A106025 A157959 A290047 * A153924 A059764 A285694

Adjacent sequences:  A094210 A094211 A094212 * A094214 A094215 A094216

KEYWORD

nonn

AUTHOR

Benoit Cloitre, May 27 2004

STATUS

approved

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Last modified October 20 01:39 EDT 2018. Contains 316378 sequences. (Running on oeis4.)