a(n) = n!*Sum_{m=1..floor(n/2)} 1/(m*binomial(n-1,2*m-1)*n).
A358966
a(n) = n!*Sum_{m=1..floor(n/2)} 1/(m*binomial(n-1,2*m-1)*n).
Terms
- a(0) =0a(1) =0a(2) =1a(3) =1a(4) =5a(5) =9a(6) =70a(7) =178a(8) =2132a(9) =6900a(10) =118536a(11) =462936a(12) =10606752a(13) =48446496a(14) =1397029824a(15) =7305837120a(16) =254261617920
External references
- oeis: A358966