Numbers k such that sigma(k) = 3k - 2*phi(k).

Terms

a(0) =1a(1) =12a(2) =56a(3) =260a(4) =992a(5) =1976a(6) =2156a(7) =2754a(8) =16256a(9) =25232a(10) =41072a(11) =133984a(12) =145888a(13) =1100864a(14) =1270208a(15) =1439552a(16) =2237888a(17) =4729664a(18) =67100672a(19) =75398912a(20) =171627376a(21) =277060144a(22) =473089984a(23) =538178048a(24) =558585344a(25) =629225984a(26) =1192258048a(27) =1863840112a(28) =2181070592a(29) =4534854656