329600

Appears in sequences

• Penrice Christmas gift numbers, Card-matching numbers (Dinner-Diner matching numbers).at n=29A059057
• Card-matching numbers (Dinner-Diner matching numbers) for 5 kinds of cards.at n=11A059071
• E.g.f. A(x) satisfies A( x/(exp(x)*cosh(x)) ) = exp(2*x)*cosh(2*x).at n=6A218300