a(n+1) is next smallest nontrivial square containing a(n) as a substring, initial term is 4.

A050630

a(n+1) is next smallest nontrivial square containing a(n) as a substring, initial term is 4.

Terms

    a(0) =4a(1) =49a(2) =1849a(3) =18496a(4) =103184964

External references