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Search: id:A118895
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| A118895 |
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Numbers n with property that both n and its digit reversal are perfect powers (i.e. in A001597). |
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+0
2
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| 1, 4, 8, 9, 100, 121, 144, 169, 343, 400, 441, 484, 676, 900, 961, 1000, 1089, 1331, 8000, 9801, 10000, 10201, 10404, 10609, 12100, 12321, 12544, 12769, 14400, 14641, 14884, 16900, 40000, 40401, 40804, 44100, 44521, 44944, 48400, 48841, 67600
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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An alternate version of A110811, which doesn't include the terms with trailing zeros.
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EXAMPLE
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100 is in the sequence because 100 and 001 = 1 are both perfect powers;
44521 and 12544 are both in the sequence because both are perfect powers, 221^2 and 112^2.
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CROSSREFS
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This sequence is a subset of both A115656 and A001597 and contains A110811.
Cf. A118715.
Adjacent sequences: A118892 A118893 A118894 this_sequence A118896 A118897 A118898
Sequence in context: A077572 A083807 A098128 this_sequence A110811 A128827 A075786
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KEYWORD
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base,easy,nonn
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AUTHOR
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Joshua Zucker (joshua.zucker(AT)stanfordalumni.org), May 04 2006
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EXTENSIONS
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Edited by N. J. A. Sloane (njas(AT)research.att.com), Oct 11 2008
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