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Search: id:A025532
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| A025532 |
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a(n) = sum of exponents in prime factorization of LCM{C(n,0), C(n,1), ..., C(n,n)}. |
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+0
1
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| 0, 0, 1, 1, 3, 2, 4, 3, 5, 5, 7, 5, 8, 7, 7, 6, 10, 8, 11, 9, 10, 10, 12, 9, 12, 12, 12, 12, 15, 13, 16, 13, 16, 16, 16, 14, 18, 17, 17, 15, 19, 17, 20, 18, 18, 19, 21, 17, 21, 20, 21, 20, 23, 20, 22, 20, 22, 22, 24, 21, 25, 24, 23, 21, 25, 24, 27, 25, 26, 25, 28, 24, 29, 28, 27
(list; graph; listen)
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OFFSET
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0,5
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PROGRAM
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(PARI) for(n=0, 100, l=1:for(k=0, n, l=lcm(l, binomial(n, k))):v=factor(l):s=0:for(k=1, matsize(v)[1], s=s+v[k, 2]):print1(s", "))
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CROSSREFS
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Sequence in context: A119707 A052938 A140114 this_sequence A133131 A026923 A058708
Adjacent sequences: A025529 A025530 A025531 this_sequence A025533 A025534 A025535
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KEYWORD
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nonn
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AUTHOR
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Clark Kimberling (ck6(AT)evansville.edu)
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EXTENSIONS
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More terms from Ralf Stephan (ralf(AT)ark.in-berlin.de), Mar 28 2003
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