a(n)=position of the first occurrence of a local maximum equal to 2n in A001223, n>1.

Terms

a(0) =4a(1) =9a(2) =24a(3) =34a(4) =91a(5) =30a(6) =282a(7) =99a(8) =154a(9) =189a(10) =263a(11) =367a(12) =429a(13) =590a(14) =738a(15) =217a(16) =1183a(17) =3302a(18) =2191a(19) =1879a(20) =1831a(21) =7970a(22) =3077a(23) =3427a(24) =2225a(25) =3793a(26) =8028a(27) =4612a(28) =4522a(29) =3644