Primes that have exactly 3 ones in both their binary and ternary expansions.

Terms

a(0) =13a(1) =37a(2) =41a(3) =67a(4) =97a(5) =131a(6) =193a(7) =577a(8) =1033a(9) =1153a(10) =2053a(11) =4129a(12) =8209a(13) =18433a(14) =32771a(15) =32801a(16) =32833a(17) =65539a(18) =133121a(19) =525313a(20) =557057a(21) =1049089a(22) =4194433a(23) =167772161a(24) =268435459