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Search: id:A062791
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| A062791 |
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Moebius transform of central binomial coefficients. |
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+0
1
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| 1, 1, 2, 4, 9, 16, 34, 64, 123, 241, 461, 900, 1715, 3396, 6423, 12800, 24309, 48477, 92377, 184500, 352679, 704969, 1352077, 2703168, 5200290, 10398883, 20058174, 40113164, 77558759, 155110827, 300540194, 601067520, 1166802646, 2333581909
(list; graph; listen)
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OFFSET
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0,3
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FORMULA
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a(n)=Sum{f[n/d]*mu[d]}, where d divides n and f[x]=A01405(x).
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EXAMPLE
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n=7,C[7,3]=35, A001405[7/d]={C[7,3],C[1,0]}={35,1},mu[d]={1,-1}, the sum is a(7)=35-1=34.
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CROSSREFS
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A001405.
Sequence in context: A082894 A091437 A131337 this_sequence A005980 A128093 A056331
Adjacent sequences: A062788 A062789 A062790 this_sequence A062792 A062793 A062794
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KEYWORD
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nonn
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AUTHOR
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Labos E. (labos(AT)ana.sote.hu), Jul 19 2001
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