a(n) = -(-1)^n * n! * hypergeometric1F1(1 - n, 2, 4*n).
A332680
a(n) = -(-1)^n * n! * hypergeometric1F1(1 - n, 2, 4*n).
Terms
- a(0) =-1a(1) =1a(2) =6a(3) =78a(4) =1576a(5) =43320a(6) =1507824a(7) =63549808a(8) =3145681536a(9) =178865283456
External references
- oeis: A332680