Starting positions of strings of three 9's in the decimal expansion of Pi.

Terms

a(0) =762a(1) =763a(2) =764a(3) =765a(4) =2949a(5) =7759a(6) =8527a(7) =9962a(8) =11197a(9) =11382a(10) =13019a(11) =16687a(12) =17119a(13) =17561a(14) =17988a(15) =17989a(16) =18680a(17) =19437a(18) =19438a(19) =19446a(20) =19447a(21) =19448a(22) =19748a(23) =21579a(24) =22309a(25) =22753a(26) =22754a(27) =23989a(28) =24107a(29) =25584