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.
%I A094702 #10 Mar 05 2015 14:34:21 %S A094702 2,12,42,90,110,152,171,208,231,336,408,476,506,765,783,840,1242,1380, %T A094702 1584,1911,2120,2162,2528,2604,2688,2706,2720,2970,3162,3172,3325, %U A094702 3392,3422,3619,3654,3708,3870,4144,4371,4472,4508,4712,4760,4876,5256,5372 %N A094702 Least linear combinations of phi(n) and sigma(n) are multiple. %C A094702 "Multiple" is used here with two distinct meanings. The linear combination of phi and sigma must be a multiple of the argument to be tallied (Cf. A094701). There must be a multiple, i.e. at least 2, of those linear combinations for the value to be in this sequence. 3 is not in this sequence because there is only one linear combination with minimal sum, 2, viz., 1*phi(3) + 1*sigma(3), which is a multiple of 3. %e A094702 2 is in the sequence because there are 3 minimal combinations of phi(2) and sigma(2), viz., 2*sigma(2), 1*phi(2) + 1*sigma(2) and 2*phi(2), all of which are multiples of 2 and all of which have coefficients totaling 2, viz., 0+2 = 1+1 = 2+0. %Y A094702 Cf. A000010, A000203, A094701. %K A094702 nonn %O A094702 0,1 %A A094702 _Walter Nissen_, May 20 2004