614718720

Appears in sequences

• Number of non-attacking placements of 6 rooks on an n X n board.at n=11A179061
• a(n) = (2*n)! * [x^(2*n)] (-x/(1 - x))^n/((1 - x)*n!).at n=6A295383
• Denominator of Sum_{k=1..n} 1/(prime(k) - 1)^2.at n=10A334746
• Denominator of Sum_{k=1..n} 1/(prime(k) - 1)^2.at n=11A334746
• a(n) = abs(A021009(n, floor(n/2))).at n=12A343580