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1, 2, 2, 2, 4, 8, 2, 6, 6, 2, 12, 2, 4, 6, 12, 2, 2, 2, 12, 32, 6, 2, 24, 12, 2, 6, 6, 2, 12, 12, 2, 6, 4, 12, 6, 12, 6, 2, 30, 6, 72, 12, 2, 6, 120, 2, 30, 6, 6, 30, 6, 6, 24, 48, 2, 12, 60, 6, 210, 2, 2, 30, 6, 6, 6, 6, 2, 2, 60, 12, 2, 2, 6, 2, 60, 24, 6, 6, 48, 12, 6, 6, 6, 2, 6, 12, 12
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,2
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LINKS
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FORMULA
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PROG
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(PARI)
A003961(n) = my(f = factor(n)); for (i=1, #f~, f[i, 1] = nextprime(f[i, 1]+1)); factorback(f); \\ This function from Michel Marcus
A005940(n) = { my(p=2, t=1); n--; until(!n\=2, if((n%2), (t*=p), p=nextprime(p+1))); t }; \\ Modified from code of M. F. Hasler
A046523(n) = { my(f=vecsort(factor(n)[, 2], , 4), p); prod(i=1, #f, (p=nextprime(p+1))^f[i]); }; \\ This function from Charles R Greathouse IV, Aug 17 2011
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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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