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Search: id:A083807
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| A083807 |
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Perfect powers using only composite digits 4,6,8,9 and 0. |
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+0
2
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| 4, 8, 9, 49, 64, 400, 484, 4096, 4489, 6084, 6889, 8464, 8649, 9409, 9604, 40804, 44944, 64009, 66049, 68644, 69696, 80089, 88804, 94864, 400689, 404496, 440896, 444889, 466489, 499849, 644809, 660969, 698896, 804609, 806404, 840889, 896809
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Terms a(n) of the form 10^k*a(m) are defined to be trivial ones. 400,40000,900,90000 etc. are considered to be trivial terms. Conjecture: sequence has infinitely many nontrivial terms.
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CROSSREFS
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Cf. A083806.
Sequence in context: A162752 A035132 A077572 this_sequence A098128 A118895 A110811
Adjacent sequences: A083804 A083805 A083806 this_sequence A083808 A083809 A083810
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KEYWORD
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base,easy,nonn
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AUTHOR
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Amarnath Murthy and Meenakshi Srikanth (amarnath_murthy(AT)yahoo.com), May 08 2003
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EXTENSIONS
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More terms from Matthew Ohlsen (mjo178(AT)psu.edu), Feb 26 2006
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