A175877 Positions of odd terms in A007497.
2, 4, 6, 33
Offset: 1
Programs
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Mathematica
n=2;Do[If[OddQ[n=DivisorSigma[1,n]],Print[{k,n}]],{k,2,99}]
This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
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