Coefficients of Legendre polynomials.

Terms

a(0) =1a(1) =1a(2) =7a(3) =33a(4) =715a(5) =4199a(6) =52003a(7) =334305a(8) =17678835a(9) =119409675a(10) =1641030105a(11) =11435320455a(12) =322476036831