

A158625


Lower limit of backward value of 5^n.


3



5, 2, 1, 3, 0, 2, 3, 3, 0, 4, 3, 1, 1, 3, 1, 1, 2, 4, 2, 1, 0, 3, 1, 3, 3, 0, 0, 0, 2, 3, 1, 4, 1, 0, 2, 1, 0, 3, 4, 3, 0, 2
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OFFSET

1,1


COMMENTS

Digits are all in {0,1,2,3,4} after first term.
The upper limit is A158624, 0.5265679578796997657885576975995789586775656...


LINKS

Table of n, a(n) for n=1..42.


EXAMPLE

5^3 = 125 so the backward value is 0.521, 5^10 = 9765625, so backward value is 0.5265679. The lower limit of all values is a constant, which appears to be 0.521302330431131124210313300023141021034302...


PROG

(Python)
# lower limit of backward sequence of 5^n
a, i=5, 0; x=a
while 1:
i+=1; print x, ', ',
for j in range(5):
if (a+j*10**i)%(5**(i+1))==0: x=j; a+=j*10**i
# Cezary Glowacz, Mar 11 2017


CROSSREFS

Cf. A158624, A004094, A023415, A145679.
Sequence in context: A243258 A275704 A038631 * A133615 A136161 A197383
Adjacent sequences: A158622 A158623 A158624 * A158626 A158627 A158628


KEYWORD

cons,nonn,nice,base,more


AUTHOR

Simon Plouffe, Mar 23 2009


STATUS

approved



