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Search: id:A086718
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| A086718 |
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Convolution of sequence of primes with sequence sigma(n). |
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+0
1
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| 2, 9, 22, 48, 85, 151, 231, 355, 500, 709, 937, 1267, 1617, 2069, 2575, 3193, 3860, 4686, 5549, 6593, 7725, 8985, 10337, 11961, 13591, 15464, 17498, 19714, 22036, 24690
(list; graph; listen)
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OFFSET
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1,1
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PROGRAM
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(PARI) p=primes(30); s=vector(30, i, sigma(i)); conv(u, v)=local(w); w=vector(length(u), i, sum(j=1, i, u[j]*v[i+1-j])); w; conv(p, s)
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CROSSREFS
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Cf. A000040, A000203.
Sequence in context: A024850 A056105 A106058 this_sequence A023625 A166754 A026589
Adjacent sequences: A086715 A086716 A086717 this_sequence A086719 A086720 A086721
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KEYWORD
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nonn
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AUTHOR
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Jon Perry (perry(AT)globalnet.co.uk), Jul 29 2003
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