A055199 10^n-th decimal digit of Pi.

1, 5, 9, 9, 8, 6, 1, 7, 2, 9, 0, 9, 2, 5, 0

Offset

0,2

References

David Blatner, The Joy of Pi, Walker and Co., NY, 1997; page 130 mentions the millionth digit.

Links

Table of n, a(n) for n=0..14.

GJ Technologies, Up to 10000000 digits of Pi

Emma Haruka Iwao, Even more pi in the sky: Calculating 100 trillion digits of pi on Google Cloud

Yasumasa Kanada, 6,442,450,000 decimal digits of pi and 1/pi [Broken Link]

Aoki Mitsuru, Multiple digits of Pi [Broken Link]

Steve Pagliarulo, Stu's pi page

Daniel B. Sedory, The Pi Pages

Daniel B. Sedory, 100,000 Decimal Digits of Pi

Alexander J. Yee and Shigeru Kondo, Round 2... 10 Trillon Digits of Pi

Example

1 is the first decimal digit of Pi, 5 is the 10th decimal digit of Pi, etc.

Mathematica

Do[Print[IntegerPart[Mod[N[Pi*Floor[10^(10^n)], 10^n + 25], 10]]], {n, -1, 8}] (* David Baugh *)

Crossrefs

Cf. A000796.

Sequence in context: A321632 A147818 A345739 * A147777 A086731 A147776

Adjacent sequences: A055196 A055197 A055198 * A055200 A055201 A055202

Keyword

nonn,base,hard

Author

Robert G. Wilson v, Jun 30 2000

Extensions

a(9)-a(12) from David Baugh, Apr 23 2004

a(13) from Jason Kimberley, Nov 08 2012

a(14) (using Iwao's data) from Wolfe Padawer, Dec 24 2022

Erroneous "a(-1)" term deleted and offset corrected by Jon E. Schoenfield, Dec 31 2022

Status

approved