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 A291640 #4 Aug 28 2017 20:15:49 %S A291640 1,5,6,8,11,12,13,17,21,23,24,25,26,27,28,31,39,41,44,45,49,51,53,54, %T A291640 55,56,57,58,61,64,68,71,75,81,82,83,85,88,91,97,98,104,105,108,111, %U A291640 113,114,119,121,122,125,129,136,137,139,146,147,148,151,153,156 %N A291640 Numbers k such that 1 is the smallest decimal digit of k^3. %e A291640 11 is in the sequence because 11^3 = 1331, the smallest decimal digit of which is 1. %o A291640 (PARI) select(k->vecmin(digits(k^3))==1, vector(500, k, k)) %Y A291640 Cf. A291639, A291641, A291642, A291643, A291644. %K A291640 nonn,base %O A291640 1,2 %A A291640 _Colin Barker_, Aug 28 2017