60894

Appears in sequences

• a(n) = (n+1)(n+2)^2*(n+3)(2n+3)(5n^2 + 19n + 20)/720.at n=7A107969
• Intersection of A108027, A108028, A108029 and A108030.at n=24A108109
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 601", based on the 5-celled von Neumann neighborhood.at n=38A272824