A099913 Related to the Herschel graph.

1, 3, 25, 243, 2425, 24243, 242425, 2424243, 24242425, 242424243, 2424242425, 24242424243, 242424242425, 2424242424243, 24242424242425, 242424242424243, 2424242424242425, 24242424242424243, 242424242424242425

Offset

0,2

Comments

Binomial transform is A099912.

Links

Table of n, a(n) for n=0..18.

Formula

G.f. : (1-7x-6x^2)/((1-x^2)(1-10x)); a(n)=10a(n-1)+a(n-2)-10a(n-3); a(n)=(-1)^n/11+8*10^n/33+2/3.

Crossrefs

Sequence in context: A346539 A350224 A171640 * A245925 A260209 A086655

Adjacent sequences: A099910 A099911 A099912 * A099914 A099915 A099916

Keyword

easy,nonn

Author

Paul Barry, Oct 30 2004

Status

approved