A004637 Cubes written in base 7.

1, 11, 36, 121, 236, 426, 1000, 1331, 2061, 2626, 3611, 5016, 6256, 11000, 12561, 14641, 20216, 23001, 25666, 32216, 36000, 43021, 50321, 55206, 63361, 102146, 111246, 121000, 131051, 141501, 152566, 164351, 206526, 222406, 236000, 253011, 300451, 315656, 334641

Offset

1,2

Links

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

Formula

a(n) = A007093(n^3) = A007093(A000578(n)). - Vincenzo Librandi, Oct 15 2015

Mathematica

FromDigits[IntegerDigits[#, 7]]&/@(Range[40]^3) (* Harvey P. Dale, Feb 24 2013 *)
Table[FromDigits[IntegerDigits[n^3, 7]], {n, 40}] (* Vincenzo Librandi, Oct 15 2015 *)

Prog

(Magma) [Seqint(Intseq(n^3, 7)): n in [1..40]]; // Vincenzo Librandi, Oct 15 2015
(PARI) for(n=1, 40, print1(fromdigits(digits(n^3, 7)), ", ")) \\ G. C. Greubel, Sep 10 2018

Crossrefs

Cf. A000578, A007093.

Sequence in context: A034309 A005000 A006505 * A191296 A052526 A366921

Adjacent sequences: A004634 A004635 A004636 * A004638 A004639 A004640

Keyword

nonn,base

Author

N. J. A. Sloane

Extensions

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

Status

approved