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A081194 a(n)=8a(n-1)-15a(n-2), a(0)=1, a(1)=16. 0
1, 16, 113, 664, 3617, 18976, 97553, 495784, 2502977, 12587056, 63151793, 316408504, 1583991137, 7925801536, 39646545233, 198285338824, 991584532097, 4958396174416, 24793401413873, 123971268694744, 619869128349857 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

FORMULA

G.f. (1+8x)/((1-3x)(1-5x)). a(n)=13*5^n/2-11*3^n/2.

CROSSREFS

Sequence in context: A000143 A035016 A205964 * A121148 A091031 A055994

Adjacent sequences:  A081191 A081192 A081193 * A081195 A081196 A081197

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Mar 11 2003

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.