a(n) = Sum_{k=0..n} n^k * hypergeom([-k, k - n], [1], 2).
A376871
a(n) = Sum_{k=0..n} n^k * hypergeom([-k, k - n], [1], 2).
Terms
- a(0) =1a(1) =2a(2) =11a(3) =88a(4) =941a(5) =12546a(6) =200479a(7) =3735264a(8) =79524793a(9) =1905008050a(10) =50720779691
External references
- oeis: A376871