Expansion of 1/( 1 - Sum_{k>=0} x^(4^k) / (1 - x^(4^k)) ).

Terms

a(0) =1a(1) =1a(2) =2a(3) =4a(4) =9a(5) =18a(6) =37a(7) =76a(8) =158a(9) =325a(10) =670a(11) =1381a(12) =2850a(13) =5876a(14) =12117a(15) =24986a(16) =51530a(17) =106262a(18) =219131a(19) =451885a(20) =931876a(21) =1921695a(22) =3962884a(23) =8172182a(24) =16852538a(25) =34752996a(26) =71667001a(27) =147790386a(28) =304770689a(29) =628492615