A102259 - OEIS

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A102259

Begin with 5, multiply each digit by 2, separate the digits.

5, 1, 0, 2, 0, 4, 0, 8, 0, 1, 6, 0, 2, 1, 2, 0, 4, 2, 4, 0, 8, 4, 8, 0, 1, 6, 8, 1, 6, 0, 2, 1, 2, 1, 6, 2, 1, 2, 0, 4, 2, 4, 2, 1, 2, 4, 2, 4, 0, 8, 4, 8, 4, 2, 4, 8, 4, 8, 0, 1, 6, 8, 1, 6, 8, 4, 8, 1, 6, 8, 1, 6, 0, 2, 1, 2, 1, 6, 2, 1, 2, 1, 6, 8, 1, 6, 2, 1, 2, 1, 6, 2, 1, 2, 0, 4, 2, 4, 2, 1, 2, 4, 2, 4, 2

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..105.

EXAMPLE

Read a(1)=5 which produces, doing 5*2=10 ["1" & "0"], a(2)=1 & a(3)=0.

Now read a(2)=1 which produces [a(3) is already written] a(4)=2 because 1*2=2.

Now read a(3)=0 which produces [a(4) is already written] a(5)=0 because 0*2=0.

MATHEMATICA

Flatten[ NestList[ Function[x, Flatten[ IntegerDigits[2IntegerDigits[ x]]]], 5, 14]] (* Robert G. Wilson v, Feb 21 2005 *)

CROSSREFS