A004639 Cubes written in base 9.

1, 8, 30, 71, 148, 260, 421, 628, 1000, 1331, 1738, 2330, 3011, 3678, 4560, 5551, 6658, 8000, 10361, 11868, 13630, 15541, 17618, 20860, 23381, 26088, 30000, 33101, 36408, 41030, 44771, 48848, 54260, 58821, 64728, 71000, 76431, 83238, 100330, 106711, 114478

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• base

Links

• G. C. Greubel, Table of n, a(n) for n = 1..5000

Crossrefs

Cf. A000578, A007095.

Programs

Magma

[Seqint(Intseq(n^3, 9)): n in [1..45]]; // Vincenzo Librandi, Oct 15 2015

Mathematica

Table[FromDigits[IntegerDigits[n^3, 9]], {n, 45}] (* Vincenzo Librandi, Oct 15 2015 *)

PARI

for(n=1,40, print1(fromdigits(digits(n^3, 9)), ", ")) \\ G. C. Greubel, Sep 10 2018

Formula

a(n) = A007095(n^3) = A007095(A000578(n)). - Vincenzo Librandi, Oct 15 2015

Extensions

Changed offset and more terms from Vincenzo Librandi, Oct 15 2015