E.g.f.: r / sqrt(1 + cos(r*x)^2) where r = sqrt(2), even powers only.
A263248
E.g.f.: r / sqrt(1 + cos(r*x)^2) where r = sqrt(2), even powers only.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =-71a(4) =-2591a(5) =-23759a(6) =7872481a(7) =1032165289a(8) =34225547329
External references
- oeis: A263248