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Search: id:A002780
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| A002780 |
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Numbers whose cube is a palindrome.
(Formerly M1736 N0688)
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+0
6
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| 0, 1, 2, 7, 11, 101, 111, 1001, 2201, 10001, 10101, 11011, 100001, 101101, 110011, 1000001, 1001001, 1100011, 10000001, 10011001, 10100101, 11000011, 100000001, 100010001, 100101001, 101000101, 110000011, 1000000001, 1000110001
(list; graph; listen)
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OFFSET
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1,3
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COMMENT
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a(8)=2201 is the only known nonpalindromic rootnumber.
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REFERENCES
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G. J. Simmons, Palindromic powers, J. Rec. Math., 3 (No. 2, 1970), 93-98.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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P. De Geest, Palindromic Cubes
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CROSSREFS
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Cf. A002781.
Sequence in context: A101592 A135066 A085315 this_sequence A069885 A069748 A064441
Adjacent sequences: A002777 A002778 A002779 this_sequence A002781 A002782 A002783
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KEYWORD
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base,nonn,nice,easy
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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More terms from Patrick De Geest.
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