a(n) is the sum of the divisors of the smallest number k such that the symmetric representation of sigma(k) has n parts.

A266094

a(n) is the sum of the divisors of the smallest number k such that the symmetric representation of sigma(k) has n parts.

Terms

    a(0) =1a(1) =4a(2) =13a(3) =32a(4) =104a(5) =228a(6) =576a(7) =1408a(8) =4104a(9) =9824a(10) =19152a(11) =39816a(12) =82944a(13) =196992a(14) =441294a(15) =881280a(16) =1911168a(17) =4539024

External references