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

Terms

a(0) =12a(1) =56a(2) =140a(3) =270a(4) =630a(5) =992a(6) =1672a(7) =4180a(8) =6426a(9) =14384a(10) =15824a(11) =16256a(12) =18810a(13) =21584a(14) =34544a(15) =40964a(16) =60102a(17) =80104a(18) =90882a(19) =93496a(20) =99484a(21) =102856a(22) =116116a(23) =140296a(24) =166624a(25) =191862a(26) =200260a(27) =220616a(28) =223938a(29) =224536