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Search: id:A162228
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| A162228 |
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Base 7 perfect digital invariants (written in base 10): numbers equal to the sum of the kth powers of their base-7 digits, for some k. |
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+0
11
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| 0, 1, 2, 3, 4, 5, 6, 9, 10, 16, 25, 32, 45, 65, 133, 134, 152, 250, 1542, 3190, 3222, 3612, 3613, 4183, 9286, 35411, 37271, 72865, 191334, 193393, 376889, 535069, 794376, 1110699, 2236488, 3021897, 4431562, 8094840, 9885773, 10883814, 16219922
(list; graph; listen)
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OFFSET
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1,3
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LINKS
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Joseph Myers, Table of n, a(n) for n=1..868 (complete to 200 base 7 digits)
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CROSSREFS
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Cf. A162229 (corresponding exponents), A010350 (restriction to power = number of digits), A033839, A162230. In other bases: A162216 (base 3), A162219 (base 4), A162222 (base 5), A162225 (base 6), A162231 (base 8), A162234 (base 9), A023052 (base 10).
Sequence in context: A082642 A153013 A052492 this_sequence A085714 A116546 A108957
Adjacent sequences: A162225 A162226 A162227 this_sequence A162229 A162230 A162231
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KEYWORD
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base,nonn
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AUTHOR
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Joseph Myers (jsm(AT)polyomino.org.uk), Jun 28 2009
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