1/2+Sum_{n >= 1} a(n)*x^(2*n)/(4^n*(2*n)!) = 1/Pi*EllipticK(x).
A060629
1/2+Sum_{n >= 1} a(n)*x^(2*n)/(4^n*(2*n)!) = 1/Pi*EllipticK(x).
Terms
- a(0) =1a(1) =27a(2) =2250a(3) =385875a(4) =112521150a(5) =49921883550
External references
- oeis: A060629
A060629
1/2+Sum_{n >= 1} a(n)*x^(2*n)/(4^n*(2*n)!) = 1/Pi*EllipticK(x).