a(n) is the smallest nonnegative integer such that a(n)! contains a string of exactly n consecutive 3's.

A254448

a(n) is the smallest nonnegative integer such that a(n)! contains a string of exactly n consecutive 3's.

Terms

    a(0) =0a(1) =8a(2) =24a(3) =25a(4) =134a(5) =407a(6) =151a(7) =2936a(8) =8040a(9) =26808a(10) =49668a(11) =115189a(12) =429335a(13) =1365981a(14) =3507499

External references