37237680

Appears in sequences

• Triangle of second-order Eulerian numbers of type B.at n=43A214406
• Triangle read by rows. The rows give the coefficients of the numerator polynomials for the o.g.f.s of the diagonal sequences of triangle A028338.at n=37A288875
• a(n) = (2*n+1)!! * (Sum_{k=1..n} 1/(2*k+1)).at n=8A334670