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 A055480 #13 Sep 23 2019 14:55:56 %S A055480 24,43,63,89,100,101,102,103,104,105,106,107,108,109,132,135,142,153, %T A055480 175,209,224,226,262,264,267,283,284,332,333,334,357,370,371,372,373, %U A055480 374,375,376,377,378,379,407,445,463,518,568,598,629,739,794,809,849,935,994,1000 %N A055480 Energetic numbers. %C A055480 Numbers that can be broken into two or more substrings and expressed as a sum of (possibly different) positive powers of those substrings. %D A055480 Frank Rubin, Journal of Recreational Mathematics, Volume 12, Number 2, Page 139. %H A055480 Jonathan Frech, <a href="/A055480/b055480.txt">Table of n, a(n) for n = 1..10000</a> %e A055480 142 = 14^1 + 2^7, 8833 = 88^2 + 33^2. %Y A055480 This is a less stringent condition than that of a "powerful" number - compare A007532. %Y A055480 Cf. A007532, A072096. %K A055480 nonn,base %O A055480 1,1 %A A055480 _Robert G. Wilson v_, Jul 05 2000 %E A055480 More terms from _Robert G. Wilson v_, Mar 07 2002 %E A055480 Edited by _David W. Wilson_, Jan 29 2003