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0, 2, 4, 7, 10, 14, 18, 22, 26, 30, 34, 39, 44, 49, 54, 59, 64, 69, 74, 79, 84, 90, 96, 102, 108, 114, 120, 126, 132, 138, 144, 150, 156, 162, 168, 174, 180, 186, 192, 198, 204, 210, 216, 223, 230, 237, 244, 251, 258, 265, 272, 279, 286, 293, 300, 307, 314, 321
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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FORMULA
| a(n)=sum{0<=k<=n, A130249(k)}=(n+1)*floor(log_2(3n+1))-1/2*A001045(floor(log_2(3n+1))+2)-1). G.f.: g(x)=1/(1-x)^2*sum{k>=1, x^A001045(k)}.
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CROSSREFS
| Cf. A130250, A130252, A130253, A130254, A130233, A130235, A130241, A130244. Also A105348, A001045.
Sequence in context: A101472 A087160 A107427 * A088236 A194244 A014616
Adjacent sequences: A130248 A130249 A130250 * A130252 A130253 A130254
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KEYWORD
| nonn
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AUTHOR
| Hieronymus Fischer (Hieronymus.Fischer(AT)gmx.de), May 20 2007
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