A004632 Cubes written in base 2.

1, 1000, 11011, 1000000, 1111101, 11011000, 101010111, 1000000000, 1011011001, 1111101000, 10100110011, 11011000000, 100010010101, 101010111000, 110100101111, 1000000000000, 1001100110001, 1011011001000, 1101011001011, 1111101000000, 10010000101101

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn
• base

Links

• Robert Israel, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A000578, A007088.

Programs

Magma

[Seqint(Intseq(n^3, 2)): n in [1..30]]; // Vincenzo Librandi, Oct 16 2015

Maple

A007088:= proc(n) local L; L:= convert(n,base,2);
add(L[i]*10^(i-1),i=1..nops(L))
end proc:
seq(A007088(n^3),n=1..100); # Robert Israel, Oct 16 2015

Mathematica

Table[FromDigits[IntegerDigits[n^3, 2]], {n, 30}] (* Vincenzo Librandi, Oct 15 2015 *)

PARI

for(n=1,20, print1(fromdigits(digits(n^3, 2)), ", ")) \\ G. C. Greubel, Sep 10 2018

Formula

a(n) = A007088(n^3) = A007088(A000578(n)). - Vincenzo Librandi, Oct 16 2015

Extensions

Changed offset and more terms from Vincenzo Librandi, Oct 16 2015