a(n) = Sum_{k=1 to d(n)} C(d(n)-1, k-1) d_k, where d(n) is the number of divisors of n and d_k is the k-th divisor of n.

A132065

a(n) = Sum_{k=1 to d(n)} C(d(n)-1, k-1) d_k, where d(n) is the number of divisors of n and d_k is the k-th divisor of n.

Terms

    a(0) =1a(1) =3a(2) =4a(3) =9a(4) =6a(5) =22a(6) =8a(7) =27a(8) =16a(9) =32a(10) =12a(11) =123a(12) =14a(13) =42a(14) =40a(15) =81a(16) =18a(17) =164a(18) =20a(19) =171a(20) =52a(21) =62a(22) =24a(23) =704a(24) =36a(25) =72a(26) =64a(27) =219a(28) =30a(29) =808

External references