Phi(A033631(n)) {phi is the Euler totient function A000010}.

Terms

a(0) =1a(1) =56a(2) =180a(3) =836a(4) =840a(5) =2400a(6) =4536a(7) =10584a(8) =10920a(9) =12540a(10) =17388a(11) =18720a(12) =23736a(13) =24864a(14) =25500a(15) =26220a(16) =23760a(17) =32376a(18) =39560a(19) =45356a(20) =53960a(21) =49680a(22) =77744a(23) =71208a(24) =60720a(25) =87032a(26) =62640a(27) =69120a(28) =63840a(29) =91776