A099293 Number of times the digit 2 appears in the first 10^n digits of Pi.

1, 12, 103, 1021, 9908, 100026, 1000306, 10001092, 100002410, 1000017271, 10000026432, 100000480057

Offset

1,2

References

Alfred S. Posamentier & Ingmar Lehmann, A Biography of the World's Most Mysterious Number, Prometheus Books, Amherst, NY 2004, page 129.

Links

Table of n, a(n) for n=1..12.

Kanada Laboratory, Statistical Distribution Information.

Eric Weisstein's World of Mathematics, Pi Digits

Mathematica

$MaxPrecision = 1100000; dp = Drop[ RealDigits[Pi, 10, 1000010] [[1]], 1]; Table[ Count[ Take[dp, 10^n], 2], {n, 6}]

Crossrefs

Cf. A099291, A099292, A099294, A099295, A099296, A099297, A099298, A099299, A099300.

Sequence in context: A228988 A266959 A262778 * A024454 A222540 A279301

Adjacent sequences: A099290 A099291 A099292 * A099294 A099295 A099296

Keyword

nonn,base

Author

Robert G. Wilson v, Oct 11 2004

Status

approved