Starting positions of strings of three 4's in the decimal expansion of Pi.

Terms

a(0) =2707a(1) =2928a(2) =3476a(3) =3809a(4) =3866a(5) =4175a(6) =4923a(7) =5290a(8) =5675a(9) =6327a(10) =6346a(11) =9384a(12) =9445a(13) =13565a(14) =18912a(15) =21929a(16) =23157a(17) =23223a(18) =25937a(19) =26531a(20) =27887a(21) =28220a(22) =28872a(23) =34587a(24) =35496a(25) =36878a(26) =37072a(27) =37758a(28) =37989a(29) =39388