Numerator of Cotesian number C(n,3).

Terms

a(0) =1a(1) =16a(2) =25a(3) =34a(4) =2989a(5) =5248a(6) =1209a(7) =5675a(8) =560593a(9) =893128a(10) =11148172711a(11) =109420087a(12) =349259195a(13) =83221185536a(15) =161769065751