A050254 - OEIS

A050254

Starting positions of strings of 2 7's in the decimal expansion of Pi.

559, 621, 625, 633, 739, 742, 890, 948, 954, 1066, 1087, 1179, 1261, 1307, 1545, 1589, 1590, 1591, 1630, 1704, 1953, 2049, 2173, 2212, 2325, 2337, 2471, 2672, 3057, 3074, 3111, 3278, 3282, 3806, 3941, 4143, 4208, 4345, 4441, 4575, 4576

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..41.

Eric Weisstein's World of Mathematics, Pi Digits

Index entries for sequences related to the number Pi

MATHEMATICA

q=8!; z=7; a=RealDigits[Pi, 10, q]; lst={}; Do[b=a[[1]][[n]]; c=a[[1]][[n+1]]; If[b==z&&c==z, AppendTo[lst, n-1]], {n, q-1}]; lst (* Vladimir Joseph Stephan Orlovsky, Jun 19 2009 *)

CROSSREFS

Sequence in context: A185772 A186134 A350664 * A139197 A361030 A136346

Adjacent sequences: A050251 A050252 A050253 * A050255 A050256 A050257

KEYWORD

nonn,base

AUTHOR

Eric W. Weisstein

STATUS

approved