Position of the first occurrence of n in A337474.

Terms

a(0) =1a(1) =3a(2) =11a(3) =23a(4) =61a(5) =127a(6) =199a(7) =331a(8) =467a(9) =673a(10) =929a(11) =1181a(12) =1493a(13) =1861a(14) =2243a(15) =2693a(16) =3221a(17) =3739a(18) =4327a(19) =4993a(20) =5689a(21) =6421a(22) =7283a(23) =8191a(24) =9137a(25) =10111a(26) =11161a(27) =12281a(28) =13451a(29) =14747