A073303 - OEIS

A073303

Indices of prime digits in the decimal expansion of Pi.

0, 4, 6, 8, 9, 10, 13, 15, 16, 17, 21, 24, 25, 27, 28, 29, 31, 33, 39, 43, 46, 47, 48, 51, 53, 56, 61, 63, 64, 66, 73, 76, 83, 86, 89, 90, 91, 93, 96, 99, 102, 109, 111, 112, 114, 115, 120, 123, 130, 131, 133, 135, 136, 137, 139, 140, 141, 142, 143, 149, 156

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

OFFSET

0,2

LINKS

Harvey P. Dale, Table of n, a(n) for n = 0..10000

EXAMPLE

Pi=3.141592653, so the indices of prime digits are 0,4,6,8,9...

MATHEMATICA

Flatten[Position[RealDigits[Pi, 10, 200][[1]], _?PrimeQ]]-1 (* Harvey P. Dale, Oct 01 2013 *)

CROSSREFS

Cf. A000796, A073264.

Sequence in context: A173328 A116661 A109104 * A104211 A132858 A071941