23984688

Appears in sequences

• a(n) = 48 * 4^n * (2*n-1)!! * (2*n+3)!! / ((n+2)! * (n+4)!).at n=9A248152
• a(n) = (n+1)*(3*n-2)*C(2*n,n-1)/(4*n-2).at n=11A352626