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

Terms

a(0) =99a(1) =4743a(2) =8307a(3) =331731a(4) =364941a(5) =497781a(6) =796671a(7) =1081251a(8) =1244709a(9) =2525211a(10) =2641509a(11) =2824263a(12) =4768101a(13) =6479343a(14) =22129731a(15) =43777053a(16) =55722717a(17) =61301187a(18) =65680893a(19) =75623967a(20) =77616963a(21) =85387293a(22) =94282389a(23) =111207969a(24) =116468613a(25) =122622453a(26) =125741061a(27) =133821297a(28) =137638233