-2027025

Appears in sequences

• 2-adic factorial function.at n=15A055634
• Coefficients of polynomial in x multiplying cosh(x) in the modified spherical Bessel function of the first kind i_n(x).at n=38A094675
• Exponential Riordan array (1, sqrt(1+2x)-1).at n=47A122850
• a(n) = n!*b(n) where b(n) = (n-4)*b(n-2)/(n*(n-1)) and b(0) = b(1) = 1.at n=19A123022
• Q(2,n), where Q(m,k) is defined in A127080 and A127137.at n=15A127144
• Lower triangular array T(n,k) generator for group of arrays related to A001147 and A102625.at n=45A132382
• Triangle T(n, k, m) = t(n,m)/( t(k,m) * t(n-k,m) ) with T(n, 0, m) = T(n, n, m) = 1, where t(n, m) = Product_{j=1..n} Product_{i=1..j-1} ( 1 - (m+1)*(i+1) ) and m = 1, read by rows.at n=37A156690
• Triangle T(n, k, m) = t(n,m)/( t(k,m) * t(n-k,m) ) with T(n, 0, m) = T(n, n, m) = 1, where t(n, m) = Product_{j=1..n} Product_{i=1..j-1} ( 1 - (m+1)*(i+1) ) and m = 1, read by rows.at n=43A156690
• Triangle used for the integral of odd powers of the sine and cosine functions.at n=44A254932