436992

Appears in sequences

• sec(arctan(x)+tan(x))=1+4/2!*x^2+80/4!*x^4+4384/6!*x^6+436992/8!*x^8...at n=4A013007
• Number of directed graphs of 2*n vertices each having an in-degree and out-degree of 1 such that the graph specifies a pairwise connected gift exchange.at n=5A322751
• Number of ternary strings of length 2*n that have fewer 0's than the combined number of 1's and 2's.at n=6A387012