913920

Appears in sequences

• Smallest k such that d(phi(k)) - phi(d(k)) = -n, where d(k) = A000005(k) and phi(k) = A000010(k).at n=29A078151
• Array by antidiagonals: Number of planar lattice walks of length 3n+2k starting at (0,0) and ending at (k,0), remaining in the first quadrant and using only NE,W,S steps.at n=32A098273
• a(n) = (32/2)*(n-1)*(n-2)*(n-3)*(n-4).at n=17A134175
• a(n) = n*(n+2)*(n+4)*(n+6).at n=27A190577
• Integer areas A of integer-sided cyclic quadrilaterals such that the length of the circumradius is a perfect square.at n=30A233315
• Number of n-colorings of the vertices of the 5-dimensional cross polytope such that no two adjacent vertices have the same color.at n=8A342073
• Triangle read by rows: T(n,k) is the number of n-colorings of the vertices of the k-dimensional cross polytope such that no two adjacent vertices have the same color. 0 <= k <= n.at n=41A342088