108864000

Appears in sequences

• a(n) = n!*(n+4)! / 4!.at n=6A010793
• Number of identity bracelets with n labeled beads of 2 colors.at n=9A032337
• a(n) = 3*n*n!.at n=10A052673
• a(n) = [n/1][n/2][n/3] ...[n/n] / n^(tau(n)/2).at n=30A076891
• Number of adjacent pairs of form (odd,odd) among all permutations of {1,2,...,n}.at n=10A077611
• Number of adjacent pairs of form (even,odd) among all permutations of {1,2,...,n}. Also, number of adjacent pairs of form (odd,even).at n=10A077613
• a(1) = 1, a(2) = 2; for n>2, a(n) = 3*(n-2)*(n-2)!.at n=11A083746
• Euler's totient of A104350(n).at n=14A104354
• Number of permutations of [n] starting and ending with an odd number.at n=12A199495
• a(n) = n! * (prime(n+1) + prime(n)) / (prime(n+1) - prime(n)).at n=9A204676
• Greatest common divisors of consecutive floor-factorial numbers (A010786).at n=29A208448
• a(n) = least k>0 such that n! divides Fibonacci(k).at n=15A214528
• The number of positive integer sequences of length n with no duplicate substrings (forward or backward) of length greater than 1 and a minimal product (= A282193(n)).at n=22A284435
• The number of positive integer sequences of length n with no duplicate substrings (forward or backward) of length greater than 1 and a minimal product (= A282193(n)).at n=23A284435
• a(n) = n*Product_{k=1..n} floor(k^((n-k)/(n-k+1))).at n=13A333690
• Number of ordered pairs (a,g) with a in IS_n the symmetric inverse semigroup on [n] and g in symmetric group on [n] such that ag=ga.at n=9A350225