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A015511 a(1)=1, a(n) = sum_{k=1}^{k=n-1} (9^k-1)/8 a(k). 0
1, 1, 11, 1012, 830852, 6133349464, 407444538242984, 243599680968409330048, 1310771150941736627904810368, 63477451180042308935531134194562816, 27666523379269090447091129488519658150671616 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

CROSSREFS

Sequence in context: A127961 A127962 A006938 * A065050 A099440 A069710

Adjacent sequences:  A015508 A015509 A015510 * A015512 A015513 A015514

KEYWORD

nonn,easy

AUTHOR

Olivier Gerard (olivier.gerard(AT)gmail.com)

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Last modified February 15 21:04 EST 2012. Contains 205854 sequences.