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A055480
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Energetic numbers.
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2
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24, 43, 63, 89, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 132, 135, 142, 153, 175, 209, 224, 226, 262, 264, 267, 283, 284, 332, 333, 334, 357, 370, 371, 372, 373, 374, 375, 376, 377, 378, 379, 407, 445, 463, 518, 568, 598, 629, 739, 794, 809, 849, 935, 994, 1000
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listen;
history;
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OFFSET
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1,1
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COMMENTS
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Numbers that can be broken into two or more substrings and expressed as a sum of (possibly different) positive powers of those substrings.
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REFERENCES
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Frank Rubin, Journal of Recreational Mathematics, Volume 12, Number 2, Page 139.
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LINKS
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Jonathan Frech, Table of n, a(n) for n = 1..10000
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EXAMPLE
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142 = 14^1 + 2^7, 8833 = 88^2 + 33^2.
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CROSSREFS
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This is a less stringent condition than that of a "powerful" number - compare A007532.
Cf. A007532, A072096.
Sequence in context: A302360 A258865 A072096 * A322843 A211568 A324459
Adjacent sequences: A055477 A055478 A055479 * A055481 A055482 A055483
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KEYWORD
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nonn,base
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AUTHOR
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Robert G. Wilson v, Jul 05 2000
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EXTENSIONS
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More terms from Robert G. Wilson v, Mar 07 2002
Edited by David W. Wilson, Jan 29 2003
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STATUS
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approved
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