Starting positions of strings of three 3's in the decimal expansion of Pi.

Terms

a(0) =1698a(1) =4928a(2) =6917a(3) =7651a(4) =8413a(5) =8736a(6) =8828a(7) =12520a(8) =17614a(9) =21973a(10) =22580a(11) =22704a(12) =22749a(13) =23471a(14) =25094a(15) =25179a(16) =28467a(17) =28468a(18) =28469a(19) =30583a(20) =32631a(21) =33095a(22) =35838a(23) =37507a(24) =38597a(25) =41392a(26) =42438a(27) =42734a(28) =45756a(29) =48033