Let W(n) = Product_{k=1..n} (1 - 1/(4*k^2)), the partial Wallis product (lim_{n->oo} W(n) = 2/Pi); then a(n) = numerator(W(n)).

A069955

Let W(n) = Product_{k=1..n} (1 - 1/(4*k^2)), the partial Wallis product (lim_{n->oo} W(n) = 2/Pi); then a(n) = numerator(W(n)).

Terms

    a(0) =1a(1) =3a(2) =45a(3) =175a(4) =11025a(5) =43659a(6) =693693a(7) =2760615a(8) =703956825a(9) =2807136475a(10) =44801898141a(11) =178837328943

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