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 A103955 #11 May 21 2025 01:23:18 %S A103955 9,27,4,8,32,214375,16,72,25,2197,3136,512,49,30459375,64,144,529,243, %T A103955 100,21316,1352,100489,648,1024,169,11907,196,1000,36992,6889,392,288, %U A103955 12967201,899236854961,324,900,117649,3125,10648,2744,841,518436000667 %N A103955 a(n) is the least k such that k-n and k are adjacent powerful numbers. %C A103955 Sister sequence of a(n)-n is given by A103954. %C A103955 a(105) > 10^22. - _Donovan Johnson_, Nov 19 2011 %H A103955 Donovan Johnson, <a href="/A103955/b103955.txt">Table of n, a(n) for n = 1..104</a> %Y A103955 Cf. A001694, A103952, A074954, A103954, A023056. %K A103955 nonn %O A103955 1,1 %A A103955 _Max Alekseyev_, Feb 22 2005 %E A103955 Offset corrected by _Donovan Johnson_, Nov 19 2011