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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 (list; graph; refs; listen; history; text; internal format)
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(s-i>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

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Last modified December 12 12:50 EST 2019. Contains 329958 sequences. (Running on oeis4.)