Engel expansion of hz = limit_{k -> infinity} 1 + k - Sum_{j = -k..k} exp(-2^j).

Terms

a(0) =1a(1) =4a(2) =4a(3) =4a(4) =4a(5) =6a(6) =11a(7) =11a(8) =11a(9) =14a(10) =61a(11) =266a(12) =1006a(13) =1030a(14) =1261a(15) =6264a(16) =7583a(17) =7979a(18) =7986a(19) =12386a(20) =80041a(21) =87434a(22) =130927a(23) =270073a(24) =1653819a(25) =1715177a(26) =1973657a(27) =3483485a(28) =12346987a(29) =17531499