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1, 3, 8, 19, 42, 89, 184, 375, 758, 1525, 3060, 6131, 12274, 24561, 49136, 98287, 196590, 393197, 786412, 1572843, 3145706, 6291433, 12582888, 25165799, 50331622, 100663269, 201326564, 402653155, 805306338, 1610612705, 3221225440
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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FORMULA
| a(0)=1 a(n)=2*a(n-1)+n;
Equals binomial transform of [1, 2, 3, 3, 3,...]. Equals row sums of triangle A132110. - Gary W. Adamson (qntmpkt(AT)yahoo.com), Aug 09 2007
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MATHEMATICA
| lst={}; Do[AppendTo[lst, 3*2^n-n-2], {n, 0, 4!}]; lst ...and/or... s=3; lst={1, s}; Do[s+=s+n++; AppendTo[lst, s], {n, 2, 4!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Oct 25 2008]
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CROSSREFS
| Cf. A000295.
Cf. A132110.
Sequence in context: A074839 A002318 A095681 * A099050 A065352 A161993
Adjacent sequences: A079580 A079581 A079582 * A079584 A079585 A079586
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KEYWORD
| nonn
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AUTHOR
| Benoit Cloitre (benoit7848c(AT)orange.fr), Jan 25 2003
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