a(n) = Sum_{k=0..n} (-1)^(n-k) * binomial(n,k)^2 * binomial(n+k,k).
A382848
a(n) = Sum_{k=0..n} (-1)^(n-k) * binomial(n,k)^2 * binomial(n+k,k).
Terms
- a(0) =1a(1) =1a(2) =-5a(3) =-35a(4) =-29a(5) =751a(6) =3991a(7) =-4115a(8) =-137885a(9) =-495269a(10) =2114245a(11) =25786795a(12) =50109775a(13) =-627370925a(14) =-4643568305a(15) =-495798035a(16) =157753390435a(17) =768269873875
External references
- oeis: A382848