a(n) = decimal equivalent of A215254(n).

Terms

a(0) =1a(1) =2a(2) =4a(3) =9a(4) =18a(5) =37a(6) =77a(7) =150a(8) =333a(9) =601a(10) =1202a(11) =2405a(12) =4941a(13) =9622a(14) =21325a(15) =38489a(16) =76978a(17) =153957