A071588 Powers of 6 written backwards.

1, 6, 63, 612, 6921, 6777, 65664, 639972, 6169761, 69677001, 67166406, 650797263, 6332876712, 61049606031, 69046146387, 675489481074, 6547099011282, 63744495662961, 614866659955101, 694010047953906, 6792600448516563

Offset: 0

Author

Benoit Cloitre, Jun 01 2002

Keywords

• easy
• nonn
• base

Links

• Seiichi Manyama, Table of n, a(n) for n = 0..1000

Crossrefs

Cf. A000400, A004086, A004094, A004167, A071582, A071583, A071584, A071586, A071587.

Programs

Mathematica

FromDigits[Reverse[IntegerDigits[#]]]&/@(6^Range[0,30]) (* Harvey P. Dale, Feb 02 2012 *)

PARI

for(i=1,50,n=5^i; s=ceil(log(n)/log(10)); print1(sum(i=0,s,10^(s-i-1)*(floor(n/10^i)-10*floor(n/10^(i+1)))),","))

Formula

a(n) = A004086(A000400(n)).