

A055476


Powers of ten written in base 5.


2



1, 20, 400, 13000, 310000, 11200000, 224000000, 10030000000, 201100000000, 4022000000000, 130440000000000, 3114300000000000, 112341000000000000, 2302320000000000000, 101101400000000000000, 2022033000000000000000
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OFFSET

0,2


COMMENTS

The leading numbers free of the trailing end 0's in the entries of sequence a(n) are the corresponding powers of 2 written in base 5, i.e., A000866(n).  Lekraj Beedassy, Oct 26 2010
The first formula follows from the fact that the quinary representation of 10^n  1 is equal to the concatenation of the quinary representation of 2^n  1 with four times the nth repunit; so the successor 10^n is the concatenation of 2^n with n zeros. See the Regan link.  Washington Bomfim, Dec 24 2010


LINKS

Table of n, a(n) for n=0..15.
Rick Regan, Nines in quinary


FORMULA

a(n) = A000866(n) followed by n zeros.


MATHEMATICA

FromDigits[IntegerDigits[#, 5]]&/@(10^Range[0, 20]) (* Harvey P. Dale, Feb 03 2019 *)


CROSSREFS

Cf. A000468, A011557.
Sequence in context: A048987 A006494 A007545 * A223180 A041181 A041762
Adjacent sequences: A055473 A055474 A055475 * A055477 A055478 A055479


KEYWORD

base,easy,nonn


AUTHOR

Henry Bottomley, Jun 27 2000


EXTENSIONS

More terms from James A. Sellers, Jul 04 2000


STATUS

approved



