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 A018853 #21 Jan 30 2017 08:50:36 %S A018853 0,1,4,14,8,15,5,29,3,31,10,33,6,19,11,35,2,65,37,21,12,68,69,22,7,4, %T A018853 72,23,13,74,132,42,134,24,43,77,138,44,14,25,8,45,144,81,46,26,147, %U A018853 83,47,84,15,151,85,27,86,273,154,49,276,88,157,28,5,159,283,9,286,51,91,289,29 %N A018853 a(n)^4 is smallest fourth power beginning with n. %H A018853 Seiichi Manyama, <a href="/A018853/b018853.txt">Table of n, a(n) for n = 0..10000</a> %F A018853 a(n^4) = n for n >= 0. - _Seiichi Manyama_, Jan 30 2017 %o A018853 (PARI) v=[]; k=1; while(#v<100, d=digits(k^4); D=digits(#v+1); if(#D<=#d, c=1; for(i=1, #D, if(D[i]!=d[i], c=0; break)); if(c, v=concat(v, k); k=0)); k++); v \\ _Derek Orr_, Aug 12 2015 %Y A018853 Cf. A018798 (a(n)^4). %Y A018853 Cf. A018851 (k=2), A018852 (k=3), this sequence (k=4), A018872 (k=5), A018874 (k=6), A018876 (k=7), A018878 (k=8), A018880 (k=9), A018882 (k=10). %K A018853 nonn,base %O A018853 0,3 %A A018853 _David W. Wilson_ %E A018853 Added initial 0. - _Seiichi Manyama_, Jan 30 2017