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Search: id:A082124
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| A082124 |
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Smallest difference>1 between d and p/d for any divisor d of the partial product p of the sequence, starting with 9. |
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+0
2
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| 9, 8, 6, 6, 6, 36, 39, 618, 4932, 60192, 3075084, 349550100, 15219084556800, 13331385308976969710
(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=9:for(n=1, 50, v=divisors(p):r=sqrt(p):t=0:for(k=1, matsize(v)[2], if(v[k]>=r, t=k:break)):if(v[t]^2==p, u=t, u=t-1):if(v[t]-v[u]<2, u=u-1:t=t+1):print1(v[t]-v[u]", "):p=p*(v[t]-v[u]))
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CROSSREFS
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Cf. A082120, A082123, A003681 (starts with 2, 3), A082125.
Sequence in context: A002391 A087044 A105415 this_sequence A132721 A097906 A086053
Adjacent sequences: A082121 A082122 A082123 this_sequence A082125 A082126 A082127
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KEYWORD
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nonn,hard,more
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AUTHOR
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Ralf Stephan (ralf(AT)ark.in-berlin.de), Apr 04 2003
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EXTENSIONS
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a(14) from Herman Jamke (hermanjamke(AT)fastmail.fm), Nov 02 2006
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