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A055480 Energetic numbers. 2

%I #13 Sep 23 2019 14:55:56

%S 24,43,63,89,100,101,102,103,104,105,106,107,108,109,132,135,142,153,

%T 175,209,224,226,262,264,267,283,284,332,333,334,357,370,371,372,373,

%U 374,375,376,377,378,379,407,445,463,518,568,598,629,739,794,809,849,935,994,1000

%N Energetic numbers.

%C Numbers that can be broken into two or more substrings and expressed as a sum of (possibly different) positive powers of those substrings.

%D Frank Rubin, Journal of Recreational Mathematics, Volume 12, Number 2, Page 139.

%H Jonathan Frech, <a href="/A055480/b055480.txt">Table of n, a(n) for n = 1..10000</a>

%e 142 = 14^1 + 2^7, 8833 = 88^2 + 33^2.

%Y This is a less stringent condition than that of a "powerful" number - compare A007532.

%Y Cf. A007532, A072096.

%K nonn,base

%O 1,1

%A _Robert G. Wilson v_, Jul 05 2000

%E More terms from _Robert G. Wilson v_, Mar 07 2002

%E Edited by _David W. Wilson_, Jan 29 2003

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)