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A085254 Numbers having a unique representation as sum of two powerful numbers (A001694). +0
5
2, 5, 8, 9, 10, 12, 13, 16, 18, 20, 24, 25, 26, 28, 29, 31, 32, 34, 35, 37, 43, 44, 45, 48, 53, 54, 58, 59, 61, 63, 64, 74, 82, 88, 90, 91, 96, 98, 99, 100, 101, 106, 112, 121, 122, 124, 126, 127, 128, 134, 135, 140, 141, 146, 149, 150, 155, 161, 162, 169, 171 (list; graph; listen)
OFFSET

1,1

COMMENT

A085252(a(n))=1.

LINKS

Eric Weisstein's World of Mathematics, Powerful Number

CROSSREFS

Cf. A085255, A076871, A085253.

Sequence in context: A072955 A076871 A070049 this_sequence A068537 A047620 A062803

Adjacent sequences: A085251 A085252 A085253 this_sequence A085255 A085256 A085257

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Jun 23 2003

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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