Numerators of coefficients of 1/2^(2n+1) in Newton's series for Pi.

Terms

a(0) =0a(1) =-2a(2) =1a(3) =1a(4) =1a(5) =5a(6) =7a(7) =7a(8) =33a(9) =429a(10) =715a(11) =2431a(12) =4199a(13) =29393a(14) =52003a(15) =185725a(16) =111435a(17) =1938969a(18) =17678835a(19) =21607465a(20) =119409675a(21) =883631595a(22) =109402007a(23) =6116566755a(24) =11435320455a(25) =57176602275a(26) =322476036831