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Search: id:A082127
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| 3, 3, 3, 2, 3, 7, 8, 12, 18, 27, 43, 62, 93, 142, 213, 317, 478, 717, 1073, 1612, 2418
(list; graph; listen)
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OFFSET
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0,1
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PROGRAM
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(PARI) p=19: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(round(log(v[t]-v[u])/log(3))", "):p=p*(v[t]-v[u]))
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CROSSREFS
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Cf. A082129.
Sequence in context: A166007 A087497 A085767 this_sequence A031354 A033700 A122916
Adjacent sequences: A082124 A082125 A082126 this_sequence A082128 A082129 A082130
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KEYWORD
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nonn,hard
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AUTHOR
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Ralf Stephan (ralf(AT)ark.in-berlin.de), Apr 04 2003
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