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A059673
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Sum of binary numbers with n 1's and one (non-leading) 0.
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3
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0, 2, 11, 38, 109, 284, 699, 1658, 3833, 8696, 19447, 42998, 94197, 204788, 442355, 950258, 2031601, 4325360, 9175023, 19398638, 40894445, 85983212, 180355051, 377487338, 788529129, 1644167144, 3422552039, 7113539558, 14763950053
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| For n>0: a(n) = sum of n-th row of the triangle in A164874. [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 29 2009]
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FORMULA
| a(n) =(2n-1)*2^n+1-n.
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EXAMPLE
| a(4)=109 since the binary sum 11110+11101+11011+10111 is 30+29+27+23
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CROSSREFS
| A030130. [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 29 2009]
Sequence in context: A038607 A079009 A097651 * A196701 A196850 A203534
Adjacent sequences: A059670 A059671 A059672 * A059674 A059675 A059676
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KEYWORD
| easy,nonn
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AUTHOR
| Henry Bottomley (se16(AT)btinternet.com), Feb 05 2001
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