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 A015497 a(0)=1, a(1)=9, a(n) = sum_{k=0}^{k=n-1} 9^k a(k). 0
 1, 9, 82, 6724, 4908520, 32209708240, 1901983271572000, 1010793793810766824000, 4834596391983083396187280000, 208113526867898819658489702096160000, 80627444554789525982513713046048334318400000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS FORMULA a(n) = (9^(n-2) + 1) * a(n-1). - Vincenzo Librandi, Nov 11 2012 PROG (MAGMA) I:=[1, 9, 82]; [n le 3 select I[n] else (9^(n-2)+1)*Self(n-1): n in [1..15]]; // Vincenzo Librandi, Nov 11 2012 CROSSREFS Sequence in context: A308481 A041146 A320991 * A174472 A039357 A048353 Adjacent sequences:  A015494 A015495 A015496 * A015498 A015499 A015500 KEYWORD nonn,easy AUTHOR STATUS approved

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Last modified December 5 15:11 EST 2019. Contains 329753 sequences. (Running on oeis4.)