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A069263 (Sum of digits of n)^3 = sum of digits of n^3. 1
1, 2, 10, 11, 20, 100, 101, 110, 111, 200, 1000, 1001, 1010, 1011, 1100, 1101, 1110, 2000, 10000, 10001, 10010, 10011, 10100, 10101, 10110, 11000, 11001, 11010, 11011, 11100, 20000, 100000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..32.

EXAMPLE

Let s(n) = sum of digits of n. Then s(101)^3 = 8 and s(101^3) = s(1030301) = 8, so 101 belongs to the sequence.

MATHEMATICA

f[n_] := Apply[Plus, IntegerDigits[n]]; Select[Range[10^5], f[ #^3] == f[ # ]^3 &]

PROG

(PARI) is(n)=sumdigits(n^3)==sumdigits(n)^3 \\ Charles R Greathouse IV, Dec 19 2016

CROSSREFS

Sequence in context: A231501 A051373 A131096 * A174569 A179884 A174570

Adjacent sequences:  A069260 A069261 A069262 * A069264 A069265 A069266

KEYWORD

base,nonn

AUTHOR

Joseph L. Pe, Apr 19 2002

STATUS

approved

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Last modified February 21 01:01 EST 2019. Contains 320362 sequences. (Running on oeis4.)