Smallest prime containing n zeros in its binary expansion.

Terms

a(0) =3a(1) =2a(2) =19a(3) =17a(4) =67a(5) =131a(6) =523a(7) =257a(8) =1033a(9) =2053a(10) =4099a(11) =8209a(12) =16417a(13) =32771a(14) =65539a(15) =65537a(16) =262147a(17) =524353a(18) =1048609a(19) =2097169a(20) =4194433a(21) =8388617a(22) =16777729a(23) =67108913a(24) =67239937a(25) =134250497a(26) =268435459a(27) =536903681a(28) =1073741827a(29) =2147483713