Z(S_m; sigma[1](n), sigma[2](n),..., sigma[m](n)) where Z(S_m; x_1,x_2,...,x_m) is the cycle index of the symmetric group S_m and sigma[k](n) is the sum of k-th powers of divisors of n; m=4.

A068021

Z(S_m; sigma[1](n), sigma[2](n),..., sigma[m](n)) where Z(S_m; x_1,x_2,...,x_m) is the cycle index of the symmetric group S_m and sigma[k](n) is the sum of k-th powers of divisors of n; m=4.

Terms

    a(0) =1a(1) =31a(2) =121a(3) =651a(4) =781a(5) =4333a(6) =2801a(7) =11811a(8) =11011a(9) =26481a(10) =16105a(11) =96957a(12) =30941a(13) =92613a(14) =100771a(15) =200787a(16) =88741a(17) =412087a(18) =137561a(19) =579201a(20) =354923a(21) =520221a(22) =292561a(23) =1812477a(24) =508431a(25) =993153a(26) =925771a(27) =2003477a(28) =732541a(29) =3996003

External references