75480

Appears in sequences

• a(n) = floor(n*(n-1)*(n-2)*(n-3)/21).at n=37A011931
• Even numbers k such that the central binomial coefficient A000984(k, k/2) is divisible by k^2.at n=37A080395
• Sum of the first k-1 numbers in the k-th column of the natural number array A000027, by antidiagonals.at n=40A185788
• Number of 3-step king's tours on an n X n board summed over all starting positions.at n=37A186862
• 5-Stirling numbers of the second kind.at n=62A193685
• Number of (w,x,y,z) with all terms in {1,...,n} and w<|x-y|+|y-z|.at n=19A212568
• Number of 3 X n 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=13A302311