Expansion of Sum_{i>=1} mu(i)^2*i*x^i/(1 - x^i) / Product_{j>=1} (1 - x^j), where mu() is the Moebius function (A008683).
A281904
Expansion of Sum_{i>=1} mu(i)^2*i*x^i/(1 - x^i) / Product_{j>=1} (1 - x^j), where mu() is the Moebius function (A008683).
Terms
- a(0) =1a(1) =4a(2) =9a(3) =16a(4) =31a(5) =58a(6) =93a(7) =144a(8) =221a(9) =343a(10) =502a(11) =733a(12) =1048a(13) =1495a(14) =2089a(15) =2881a(16) =3947a(17) =5357a(18) =7205a(19) =9618a(20) =12758a(21) =16812a(22) =22001a(23) =28623a(24) =37037a(25) =47720a(26) =61121a(27) =77973a(28) =99029a(29) =125322
External references
- oeis: A281904