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 A291627 #4 Aug 28 2017 09:19:11 %S A291627 5,15,16,17,18,23,25,27,57,65,68,73,75,77,82,85,156,157,158,162,163, %T A291627 164,165,166,167,168,172,173,185,193,206,207,208,215,218,222,223,232, %U A291627 233,235,273,275,277,278,282,287,288,292,307,315,472,473,474,475,476 %N A291627 Numbers k such that 2 is the smallest decimal digit of k^2. %e A291627 278 is in the sequence because 278^2 = 77284, the smallest decimal digit of which is 2. %o A291627 (PARI) select(k->vecmin(digits(k^2))==2, vector(1000, k, k)) %Y A291627 Cf. A291625, A291626, A291628, A291629, A291630, A291631. %K A291627 nonn,base %O A291627 1,1 %A A291627 _Colin Barker_, Aug 28 2017