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0, 0, 0, 6, 0, 0, 5, 8, 0, 0, 0, 26, 15, 26, 18, 40, 0, 0, 0, 22, 0, 0, 63, 56, 9, 14, 31, 34, 82, 124, 119, 64, 0, 0, 0, 50, 0, 0, 45, 88, 0, 0, 0, 98, 99, 38, 234, 88, 29, 114, 29, 202, 35, 34, 136, 160, 162, 444, 406, 130, 393, 430, 452, 224, 0, 0, 0, 42, 0, 0, 97, 120, 0, 0, 0, 46, 215, 222, 130, 136, 0, 0, 0, 202
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,4
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LINKS
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FORMULA
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PROG
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(PARI)
A003415(n) = if(n<=1, 0, my(f=factor(n)); n*sum(i=1, #f~, f[i, 2]/f[i, 1]));
A005940(n) = { my(p=2, t=1); n--; until(!n\=2, if((n%2), (t*=p), p=nextprime(p+1))); (t); };
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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