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A082127
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Rounded base-3 logarithm of A082126(n).
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1
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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; refs; listen; history; internal format)
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OFFSET
| 0,1
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PROG
| (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
| Cf. A082129.
Sequence in context: A166007 A087497 A085767 * A031354 A200777 A033700
Adjacent sequences: A082124 A082125 A082126 * A082128 A082129 A082130
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KEYWORD
| nonn,hard
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AUTHOR
| Ralf Stephan (ralf(AT)ark.in-berlin.de), Apr 04 2003
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