A131494 - OEIS

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A131494

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

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(s-i>11, s=s/10, ); if(floor(s)==i, printp1(i, ", "), ))

CROSSREFS

Cf. A100129

Sequence in context: A348821 A104284 A237477 * A234804 A261941 A264887