

A131494


Values of n such that e^n starts with the digits n.


3



5825, 561220, 7755606, 2888937688, 6264901444, 23619873712, 571269301377, 713764980661, 869172568999, 5532978040527, 7642834168124, 203889078936944, 40287674650484416, 243168646125929188, 940265659937347772
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OFFSET

1,1


LINKS

Table of n, a(n) for n=1..15.


EXAMPLE

561220 is a term of this sequence because e^561220 = 561220.7799... * 10^243729, which starts with 561220.


PROG

(PARI) e=exp(1); s=1; for(i=1, 10000000, s=s*e; if(si>11, s=s/10, ); if(floor(s)==i, printp1(i, ", "), ))


CROSSREFS

Cf. A100129
Sequence in context: A251920 A104284 A237477 * A234804 A261941 A264887
Adjacent sequences: A131491 A131492 A131493 * A131495 A131496 A131497


KEYWORD

more,nonn,base


AUTHOR

Randy L. Ekl, Aug 12 2007


EXTENSIONS

a(4)a(15) from Max Alekseyev, Sep 12 2013


STATUS

approved



