272160000

Appears in sequences

• Number of white corners in all permutations of {1,2,...,n} (for definition see the Eriksson-Linusson references).at n=10A140712
• Triangle read by rows: T(n,k) (n>=1, 3<=k<=n+2) is the number of k-sequences of balls colored with n colors such that exactly two balls are of a color seen previously in the sequence.at n=43A281944
• Odd bisection of A278243: a(n) = A046523(A277324(n)).at n=37A284573