Numbers k such that sigma(k) = psi(k) + phi(k) + tau(k)^2.

Terms

a(0) =1416a(1) =1584a(2) =1836a(3) =2760a(4) =4020a(5) =4144a(6) =8052a(7) =9204a(8) =10384a(9) =12084a(10) =14964a(11) =15252a(12) =16428a(13) =20020a(14) =21424a(15) =31590a(16) =32670a(17) =34650a(18) =113620a(19) =137020a(20) =155610a(21) =187220a(22) =296010a(23) =521730a(24) =1528436a(25) =2094784a(26) =3012608a(27) =3683392a(28) =5000500a(29) =11681516