Reduced numerators of 2*(2^(1+n)-1)/(1+n)/(2+n).

Terms

a(0) =1a(1) =1a(2) =7a(3) =3a(4) =31a(5) =3a(6) =127a(7) =85a(8) =511a(9) =93a(10) =2047a(11) =105a(12) =8191a(13) =5461a(14) =32767a(15) =3855a(16) =131071a(17) =1533a(18) =524287a(19) =69905a(20) =299593a(21) =182361a(22) =8388607a(23) =1118481a(24) =33554431a(25) =22369621a(26) =19173961a(27) =9256395a(28) =536870911a(29) =11545611