a(1) = 3; a(n+1) = smallest triangular number formed by inserting one or more digits into a(n).

A068619

a(1) = 3; a(n+1) = smallest triangular number formed by inserting one or more digits into a(n).

Terms

    a(0) =3a(1) =36a(2) =136a(3) =1326a(4) =113526a(5) =110283526

External references