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Search: id:A064011
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| A064011 |
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Sum of distinct primes dividing n!+1. |
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+0
1
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| 2, 3, 7, 5, 11, 110, 71, 722, 359, 329902, 39916801, 2834342, 75024430, 3790360510, 46271879, 1059865, 1538931, 123611150, 1713311273363902, 117897322430, 2703876255255, 93799610095770191, 148139754736864717
(list; graph; listen)
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OFFSET
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1,1
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LINKS
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Harry J. Smith, Table of n, a(n) for n=1,...,60
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PROGRAM
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(PARI) sopf(n, s, fac, i)=fac=factor(n); for(i=1, matsize(fac)[1], s=s+fac[i, 1]); return(s); for(n=1, 23, print(sopf(n!+1)))
(PARI) sopf(n)= { local(f, s=0); f=factor(n); for(i=1, matsize(f)[1], s+=f[i, 1]); return(s) } { for (n=1, 60, write("b064011.txt", n, " ", sopf(n! + 1)) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Sep 06 2009]
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CROSSREFS
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Sequence in context: A063904 A139317 A117928 this_sequence A050367 A059459 A124440
Adjacent sequences: A064008 A064009 A064010 this_sequence A064012 A064013 A064014
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KEYWORD
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easy,nonn
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AUTHOR
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Jason Earls (zevi_35711(AT)yahoo.com), Sep 07 2001
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