Expansion of x * (d/dx) 1/(1 - Sum_{k>=0} x^(2^k)).

Terms

a(0) =0a(1) =1a(2) =4a(3) =9a(4) =24a(5) =50a(6) =108a(7) =217a(8) =448a(9) =882a(10) =1740a(11) =3366a(12) =6504a(13) =12428a(14) =23660a(15) =44745a(16) =84352a(17) =158270a(18) =296064a(19) =551950a(20) =1026360a(21) =1903524a(22) =3522596a(23) =6504998a(24) =11990160a(25) =22061700a(26) =40528748a(27) =74343096a(28) =136183488a(29) =249145148