a(1) = 3 = 1*3; a(n) = smallest multiple of a(n-1) which is a product of two consecutive odd numbers.

A068858

a(1) = 3 = 1*3; a(n) = smallest multiple of a(n-1) which is a product of two consecutive odd numbers.

Terms

    a(0) =3a(1) =15a(2) =195a(3) =4095a(4) =2477475a(5) =448422975

External references