30144

Appears in sequences

• Number of 5-step left-handed knight's tours (moves only out two, left one) on an n X n board summed over all starting positions.at n=21A187175
• Principal diagonal of the convolution array A213844.at n=17A213845
• Numbers n such that n^16+1 and (n+2)^16+1 are both prime.at n=34A217991
• Row 4 of array in A265080.at n=12A265081
• G.f. A(x,y) satisfies 1/x = Sum_{n=-oo..+oo} A(x,y)^n * (A(x,y)^n + y)^(n+1), as a triangle of coefficients T(n,k) of x^n*y^k in A(x,y), read by rows.at n=46A379200
• Column 1 of triangle A379200; a(n) = A379200(n,1) for n >= 2.at n=8A379201