1669568domain: NAppears in sequencesDefine K(n) = Integral_{t=-1..1} t^(2n)*(1-t^2)^(2n)/(1+it)^(3n+1)dt and write K(n) = d(n)*Pi - a(n)/c(n) where a(n), d(n), c(n) are positive integers; sequence gives a(n).at n=2A305997a(n) is the forgotten index of the Lucas cube Lambda(n).at n=15A307307