Numerators of the Taylor coefficients of (e^x-1)^2.

Terms

a(0) =1a(1) =1a(2) =7a(3) =1a(4) =31a(5) =1a(6) =127a(7) =17a(8) =73a(9) =31a(10) =2047a(11) =1a(12) =8191a(13) =5461a(14) =4681a(15) =257a(16) =131071a(17) =73a(18) =524287a(19) =1271a(20) =42799a(21) =60787a(22) =8388607a(23) =241a(24) =33554431a(25) =22369621a(26) =19173961a(27) =617093a(28) =536870911a(29) =49981