a(n) is the starting position of the first occurrence of a string of (at least) n '5's in the decimal expansion of Pi.

A050284

a(n) is the starting position of the first occurrence of a string of (at least) n '5's in the decimal expansion of Pi.

Terms

    a(0) =4a(1) =130a(2) =177a(3) =24466a(4) =24466a(5) =244453a(6) =3517236a(7) =168743355a(8) =5050944965a(9) =7644991298a(10) =157675736216

External references