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 A326739 #6 Jul 27 2019 10:07:59 %S A326739 6,61,106,116,126,136,146,156,166,176,186,196,206,213,306,312,406,506, %T A326739 606,611,706,724,746,806,906,1061,1161,1261,1361,1461,1561,1661,1761, %U A326739 1861,1961,2061,2131,2272,2596,3061,3121,3765,3863,4061,4172,4572,5061,6061 %N A326739 Numbers which converge to 6 under repeated application of the powertrain map of A133500. %e A326739 724 -> 7^2*4 = 196 -> 1^9*6 = 6. %Y A326739 Cf. A133500, A133501, A135384, A135385, A309385, A326733, A326734, A326735, A326736, A326737, A326738, A326740, A326741, A326742. %K A326739 nonn,base,easy %O A326739 1,1 %A A326739 _Martin Renner_, Jul 22 2019