A050281 a(n) is the starting position of the first occurrence of a string of n 2's in the decimal expansion of Pi.

6, 135, 1735, 4902, 65260, 963024, 82599811, 175820910, 1270311937, 20717271655, 225023890967, 1479132847647, 5547233660249

Offset

1,1

Links

Table of n, a(n) for n=1..13.

Peter Trüb, 22.4 trillion digits of pi

Eric Weisstein's World of Mathematics, Pi Digits.

Crossrefs

Cf. A035117.

Sequence in context: A295408 A301463 A220064 * A096756 A356505 A241999

Adjacent sequences: A050278 A050279 A050280 * A050282 A050283 A050284

Keyword

nonn,base,more,changed

Author

Eric W. Weisstein

Extensions

More terms from Colin Martin (cbmartin(AT)tpg.com.au), Mar 03 2002

a(10) from Giovanni Resta, Oct 02 2019

a(11)-a(13) from Dmitry Petukhov, Jan 14 2020

Status

approved