Numbers k such that phi(2k+1) = phi(2k+2).

Terms

a(0) =0a(1) =1a(2) =7a(3) =127a(4) =247a(5) =487a(6) =1312a(7) =1627a(8) =1852a(9) =2593a(10) =5857a(11) =6682a(12) =9157a(13) =11467a(14) =12772a(15) =23107a(16) =24607a(17) =24667a(18) =28822a(19) =32767a(20) =82087a(21) =92317a(22) =99157a(23) =107887a(24) =143497a(25) =153697a(26) =159637a(27) =194122a(28) =198742a(29) =207637