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 A222175 #13 May 10 2013 16:20:28 %S A222175 1,6,8,11,33,55,70,225,348,430,1449,3091,4455,5334,6369,17822,21039, %T A222175 40227,47133,55165,64468,160215,441105,1159752,1327013,2929465, %U A222175 3334067,7142275,16873472,19032990,38749850,86737678,97129029,189672868,405991500,451875336,852077072,1756048833,2152268305,3558408287,4341238854,7098041203 %N A222175 Numbers n such that 7n is a partition number. %F A222175 a(j) = A225327(j)/7. %e A222175 6 is in the sequence because 7*6 = 42 and 42 is a partition number: p(10) = A000041(10) = 42. %t A222175 Select[PartitionsP[Range[300]], Mod[#, 7] == 0 &]/7 (* _T. D. Noe_, May 05 2013 *) %Y A222175 Cf. A000041, A213179, A213365, A216258, A217725, A217726, A222178, A222179, A225317, A225323, A225327. %K A222175 nonn %O A222175 1,2 %A A222175 _Omar E. Pol_, May 05 2013 %E A222175 a(9)-a(42) from _R. J. Mathar_, May 05 2013