A083608 Starting positions of strings of five 2's in the decimal expansion of Pi.

65260, 327074, 580735, 619398, 644011, 720510, 963024, 963025, 993919, 1078372, 1196183, 1303184, 1347014, 1391134, 1580648, 1592452, 1636486, 1637080, 1637081, 1795773, 1795774, 1921819, 1964004, 1991262, 2162262, 2355086, 2492921, 2523356, 2523357, 2915313

Offset: 1

Author

Rick L. Shepherd, May 01 2003

Keywords

• nonn
• base

Comments

Starting position counted after decimal point.- Harvey P. Dale, Mar 11 2023

Links

• Dave Andersen, Pi-Search Page
• Eric Weisstein's World of Mathematics, Pi Digits.
• Index entries for sequences related to the number Pi

Crossrefs

Cf. A083607 (four 2's), A083609 (six 2's).

Programs

Mathematica

Transpose[StringPosition[StringDrop[ToString[N[Pi,10! ]],2],"22222"]][[1]] (* Vladimir Joseph Stephan Orlovsky, Jun 19 2009 *)
SequencePosition[RealDigits[Pi,10,3 10^6][[1]],{2,2,2,2,2}][[;;,1]]-1 (* Harvey P. Dale, Mar 11 2023 *)

Extensions

More terms from Jinyuan Wang, Feb 29 2020