STATUS
reviewed
reviewed
proposed
editing
approved
(MAGMA) [1] cat [(-1/2)^n*(1 +(&+[(-2)^k*Binomial(2*k, k)/(k+1): k in [0..n-1]])): n in [1..30]]; // G. C. Greubel, Feb 27 2019
proposed
editing
approved
proposed
editing