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A162228 Base 7 perfect digital invariants (written in base 10): numbers equal to the sum of the k-th powers of their base-7 digits, for some k. 11
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; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Joseph Myers, Table of n, a(n) for n=1..868 (complete to 200 base 7 digits)

CROSSREFS

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: A319450 A153013 A052492 * A085714 A240093 A286421

Adjacent sequences:  A162225 A162226 A162227 * A162229 A162230 A162231

KEYWORD

base,nonn

AUTHOR

Joseph Myers, Jun 28 2009

STATUS

approved

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Last modified April 25 21:06 EDT 2019. Contains 322461 sequences. (Running on oeis4.)