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0, 1, 4, 7, 11, 15, 20, 25, 30, 35, 40, 45, 51, 57, 63, 69, 75, 81, 87, 93, 99, 105, 112, 119, 126, 133, 140, 147, 154, 161, 168, 175, 182, 189, 196, 203, 210, 217, 224, 231, 238, 245, 252, 259, 267, 275, 283, 291, 299, 307, 315, 323, 331, 339, 347, 355, 363, 371
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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FORMULA
| a(n)=sum{0<=k<=n, A130250(k)}=n*ceiling(log_2(3n-1))-1/2*A001045(ceiling(log_2(3n-1))+1)-1). G.f.: g(x)=1/(1-x)^2*sum{k>=0, x^A001045(k)}.
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CROSSREFS
| Cf. A130249, A130251, A130253, A130254, A130234, A130236, A130242, A130244. Also A105348, A001045.
Sequence in context: A056548 A065981 * A130254 A172472 A134918 A078916
Adjacent sequences: A130249 A130250 A130251 * A130253 A130254 A130255
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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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