Row 2 of A276945: a(n) = A002110(n) + A002110(n+1).

A276939

Row 2 of A276945: a(n) = A002110(n) + A002110(n+1).

Terms

    a(0) =3a(1) =8a(2) =36a(3) =240a(4) =2520a(5) =32340a(6) =540540a(7) =10210200a(8) =232792560a(9) =6692786100a(10) =207030183360

External references