Numbers k such that sigma(k) = psi(k) + phi(k) + tau(k).

Terms

a(0) =80a(1) =608a(2) =16830a(3) =149984a(4) =216568a(5) =251392a(6) =534114a(7) =1329174a(8) =2135104a(9) =4087864a(10) =47959496a(11) =70884608a(12) =227556608a(13) =974754272a(14) =2154622208a(15) =4210790624a(16) =34963314688a(17) =42710603776a(18) =63839574016