A131493 - OEIS

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A131493

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

3, 226, 1837, 2163, 5358, 44857, 170788, 482721, 8918391, 36589396, 122394502, 1107852077, 10071260304, 22991513047, 81477190549, 422242473309, 4242315932866, 153777057499935, 282960008506695, 1683262946768556, 1099372130016731506, 1117679864051418714

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..22.

EXAMPLE

226 is a term of this sequence because Pi^226 = 226.9191... * 10^110, which starts with 226.

PROG

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

CROSSREFS

Cf. A100129, A131494

Sequence in context: A157582 A241098 A254157 * A228871 A195500 A099426