a(n) = numerator(Bernoulli(2*n)*(1/2 - n)! / sqrt(Pi)).

A335750

a(n) = numerator(Bernoulli(2*n)*(1/2 - n)! / sqrt(Pi)).

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =8a(6) =11056a(7) =32a(8) =231488a(9) =5614976a(10) =44700416a(11) =39773696a(12) =242036829184a(13) =1347442688

External references