A052071 a(n)^3 is the smallest cube whose digits occur with the same frequency n.

0, 11, 888, 2830479, 120023142, 6351783105, 267745815817

Offset

1,2

Links

Table of n, a(n) for n=1..7.

Patrick De Geest, Numbers whose digits occur with same frequency

Example

2830479^3 = 22676697737363992239 and its digits 2, 3, 6, 7 and 9 each occur four times.

Mathematica

Table[i = 0;
While[x = i^3; Union@DeleteCases[DigitCount[x], 0] != {n}, i++];
i, {n, 7}] (* Robert Price, Oct 12 2019 *)

Crossrefs

Cf. A052072, A052047, A052048, A052051, A052052, A052069.

Sequence in context: A238715 A162448 A024150 * A176709 A336800 A083816

Adjacent sequences: A052068 A052069 A052070 * A052072 A052073 A052074

Keyword

nonn,base,more,nice

Author

Patrick De Geest, Jan 15 2000

Extensions

Offset corrected by Michel Marcus, Aug 12 2015

a(7) from Giovanni Resta, Aug 19 2018

Status

approved