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A004634 Cubes written in base 4. 1
1, 20, 123, 1000, 1331, 3120, 11113, 20000, 23121, 33220, 110303, 123000, 202111, 222320, 310233, 1000000, 1030301, 1123020, 1223023, 1331000, 2100231, 2212120, 2332013, 3120000, 3310021, 10102220, 10303203, 11113000, 11331011, 12211320 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

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

FORMULA

a(n) = A007090(n^3) = A007090(A000578(n)). - Robert Israel, Oct 15 2015

MAPLE

f:= proc(n) local t; t:= convert(n^3, base, 4); add(t[i]*10^(i-1), i=1..nops(t)) end proc:

map(f, [$1..50]); # Robert Israel, Oct 14 2015

MATHEMATICA

Table[FromDigits[IntegerDigits[n^3, 4]], {n, 30}] (* Vincenzo Librandi, Oct 15 2015 *)

PROG

(MAGMA) [Seqint(Intseq(n^3, 4)): n in [1..30]]; // Vincenzo Librandi, Oct 15 2015

(PARI) for(n=1, 30, print1(fromdigits(digits(n^3, 4)), ", ")) \\ G. C. Greubel, Sep 10 2018

CROSSREFS

Cf. A000578, A007090, A004633.

Sequence in context: A213223 A041770 A156255 * A222859 A263545 A227057

Adjacent sequences:  A004631 A004632 A004633 * A004635 A004636 A004637

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified October 22 22:22 EDT 2020. Contains 337962 sequences. (Running on oeis4.)