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A084643
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3^(n-1)*(2*n-3)+2^(n+1).
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3
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1, 3, 11, 43, 167, 631, 2315, 8275, 28943, 99439, 336659, 1126027, 3728279, 12239527, 39890843, 129205699, 416249375, 1334710495, 4262149667, 13560765691, 43005771431, 135988785943, 428882869931, 1349402340403
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| Binomial transform of A048495. Second binomial transform of 1, 1, 3, 5, 7, ...
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..1000
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PROG
| (MAGMA) [3^(n-1)*(2*n-3)+2^(n+1) : n in [0..30]]; // Vincenzo Librandi, Sep 25 2011
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CROSSREFS
| Cf. A060747.
Sequence in context: A106876 A034477 A140803 * A007583 A026671 A026876
Adjacent sequences: A084640 A084641 A084642 * A084644 A084645 A084646
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KEYWORD
| nonn,easy
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AUTHOR
| Paul Barry (pbarry(AT)wit.ie), Jun 09 2003
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