46980

Appears in sequences

• Floor[n(n-1)(n-2)(n-3)/14].at n=30A011924
• Number of ways to place 2 nonattacking bishops on an n X n toroidal board.at n=17A177755
• Smaller of bi-unitary amicable pair.at n=14A292980
• First elements of maximal isospectral chains of length 3.at n=4A335082
• Triangle read by rows: T(n,k) is the number of acyclic digraphs on n labeled nodes with k arcs and a global source, n >= 1, k = 0..n*(n-1)/2.at n=38A350487
• a(n) = Sum_{k=0..floor(n/3)} binomial(k+2,2) * binomial(k,n-3*k)^2.at n=25A377147