A100080 Position of first occurrence of n after the decimal point in the decimal expansion of 1/Pi.

5, 2, 26, 1, 29, 19, 9, 13, 3, 6, 297, 64, 50, 385, 45, 18, 116, 65, 2, 41, 393, 102, 85, 125, 35, 93, 26, 86, 32, 43, 4, 1, 92, 58, 59, 69, 126, 12, 165, 151, 36, 717, 437, 196, 226, 29, 60, 160, 46, 55, 30, 112, 25, 19, 108, 90, 105, 134, 123, 70, 88, 9, 446, 149, 236, 511

Offset

0,1

Comments

a(0) = A133268(1),

a(1) = A134251(1),

a(2) = A134252(1),

a(3) = A134253(1),

a(4) = A134254(1),

a(5) = A134255(1),

a(6) = A134256(1),

a(7) = A134257(1),

a(8) = A134258(1),

a(9) = A134259(1),

a(10) = A134260(1). - Artur Jasinski, Oct 16 2007

Links

Table of n, a(n) for n=0..65.

Example

1/Pi = 0.31830988618379067153776752674... so the first occurrence of 0 after the decimal point is at position 5; first occurrence of 1 is at position 2; first occurrence of 2 is at position 26; etc.

Mathematica

Table[ SequencePosition[#, IntegerDigits@ n][[1, 1]], {n, 0, 65}] &@ First@ RealDigits@ N[1/Pi, 10^4] (* James C. McMahon, Feb 06 2024 *)

Crossrefs

Cf. A032445 and A014777 for Pi, A078197 for e. Digits of 1/Pi=A049541.

Cf. A037000, A014777, A133268, A134251, A134252, A134253, A134254, A134255, A134256, A134257, A134258, A134259, A134260.

Sequence in context: A135138 A128712 A202141 * A117734 A007572 A297812

Adjacent sequences: A100077 A100078 A100079 * A100081 A100082 A100083

Keyword

base,easy,nonn

Author

Mark Hudson (mrmarkhudson(AT)hotmail.com), Nov 03 2004

Extensions

Edited by N. J. A. Sloane, Jun 30 2008 at the suggestion of R. J. Mathar

Status

approved