A098319 a(1)=0, and a(n+1) is the position of first occurrence of a(n) in the decimal expansion of 1/Pi.

0, 5, 19, 41, 717, 925, 358, 1004, 5044, 6981, 2520, 7559, 139, 694, 919, 40, 36, 126, 663, 1745, 3950, 12447, 18530, 22257, 82998, 27887, 5940, 1387, 3601, 2344, 2795, 2422, 49157, 6577, 5816, 10987, 36519, 334412, 153716, 1055197, 11437580

Offset

1,2

Comments

The equivalent sequence for Zeta(3) repeated after very few terms. When, if ever, does this sequence start to repeat?

Links

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

Example

1/Pi = 0.31830988618379067153...
a(1)=0; a(2)=5 because the 5th decimal digit after the "0." is 0; a(3)=19 because the 19th digit is 5, etc.

Crossrefs

Cf. A098266 (for e version), A097614 (for Pi version), A098289 (for log(2) version), A098290 (for Zeta(3) version), A049541 for digits of 1/Pi.

Sequence in context: A147307 A234801 A089148 * A022267 A094465 A020580

Adjacent sequences: A098316 A098317 A098318 * A098320 A098321 A098322

Keyword

nonn,base

Author

Mark Hudson (mrmarkhudson(AT)hotmail.com), Sep 02 2004

Extensions

a(38)-a(39) from Nathaniel Johnston, Apr 30 2011

a(40) and a(41) from D. S. McNeil, Aug 27 2011

Status

approved