Number of n-bit base-2 deletable primes.

Terms

a(0) =0a(1) =2a(2) =2a(3) =2a(4) =3a(5) =6a(6) =6a(7) =11a(8) =18a(9) =31a(10) =49a(11) =87a(12) =155a(13) =253a(14) =427a(15) =781a(16) =1473a(17) =2703a(18) =5094a(19) =9592a(20) =18376a(21) =35100a(22) =67183a(23) =129119a(24) =249489a(25) =482224a(26) =930633a(27) =1803598a(28) =3502353a(29) =6813094