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 A291625 #9 Aug 28 2017 12:41:34 %S A291625 10,20,30,32,33,40,45,47,48,49,50,51,52,53,55,60,64,70,71,78,80,84,90, %T A291625 95,97,98,99,100,101,102,103,104,105,110,120,130,138,140,142,143,144, %U A291625 145,147,148,149,150,151,152,153,155,160,170,174,175,176,179,180 %N A291625 Numbers k such that 0 is the smallest decimal digit of k^2. %e A291625 47 is in the sequence because 47^2 = 2209, the smallest decimal digit of which is 0. %o A291625 (PARI) select(k->vecmin(digits(k^2))==0, vector(1000, k, k)) %o A291625 (Python) %o A291625 A291625_list = [k for k in range(1,10**6) if '0' in str(k**2)] # _Chai Wah Wu_, Aug 28 2017 %Y A291625 Cf. A291626, A291627, A291628, A291629, A291630, A291631. %K A291625 nonn,base %O A291625 1,1 %A A291625 _Colin Barker_, Aug 28 2017