49206

Appears in sequences

• Number of connected functions on n points with a loop of length 4.at n=11A029853
• a(n) = 3*(a(n-2) + 1), with a(0) = 1, a(1) = 3.at n=18A087503
• Expansion of x*(1+x+2*x^3) / ((x-1)*(1+x)*(3*x^2-1)).at n=20A120463
• a(n) = (5*3^n-3)/2.at n=9A134931
• Expansion of (1+2*x+2*x^2-x^3)/((1-x)*(1+x)*(1-3x^2)).at n=18A220946
• Number of (2+1) X (n+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction.at n=12A250770
• a(n) = Product_{d|n} prime(d).at n=33A275700
• a(1) = 24603, a(n) = n*a(n-1) but products that are not in A010784 are first reduced as in A320486 (see comments); continue until zero is reached.at n=1A321148