E.g.f.: 2*cos(x) / (1 + sqrt(1 - 2*sin(2*x))).
A318004
E.g.f.: 2*cos(x) / (1 + sqrt(1 - 2*sin(2*x))).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =23a(4) =249a(5) =3601a(6) =65163a(7) =1420103a(8) =36240369a(9) =1060638241a(10) =35030837523
External references
- oeis: A318004