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

Offset: 1

Author

Randy L. Ekl, Aug 12 2007

Keywords

• nonn
• base

Examples

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

Crossrefs

Cf. A100129, A131494

Programs

PARI

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

Extensions

a(10)-a(12) from Jon E. Schoenfield, Jul 17 2010

a(13)-a(22) from Max Alekseyev, Sep 12 2013