(Concatenation of T(n)+1..T(n+1)) mod (concatenation of T(n-1)+1..T(n)), where T(k) is the k-th triangular number, A000217(k).

A095222

(Concatenation of T(n)+1..T(n+1)) mod (concatenation of T(n-1)+1..T(n)), where T(k) is the k-th triangular number, A000217(k).

Terms

    a(0) =0a(1) =19a(2) =22a(3) =52785a(4) =459136846a(5) =77032955851

External references