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=8.

A068025

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=8.

Terms

    a(0) =1a(1) =511a(2) =9841a(3) =174251a(4) =488281a(5) =6017605a(6) =6725601a(7) =50955971a(8) =72636421a(9) =276964061a(10) =235794769a(11) =2234070293a(12) =883708281a(13) =3698977205a(14) =5148057541a(15) =13910980083a(16) =7411742281a(17) =46982039533a(18) =17927094321a(19) =99343345101a(20) =69493620405

External references