A modular binomial sum transform of 2^n.

Terms

a(0) =1a(1) =1a(2) =5a(3) =1a(4) =5a(5) =17a(6) =85a(7) =1a(8) =5a(9) =17a(10) =85a(11) =257a(12) =1285a(13) =4369a(14) =21845a(15) =1a(16) =5a(17) =17a(18) =85a(19) =257a(20) =1285a(21) =4369a(22) =21845a(23) =65537a(24) =327685a(25) =1114129a(26) =5570645a(27) =16843009a(28) =84215045a(29) =286331153