83906

Appears in sequences

• a(n) = floor(n*(n-1)*(n-2)*(n-3)/9).at n=31A011919
• Number of permutations of length n which avoid the patterns 2143, 2431, 3124.at n=10A116826
• G.f.: exp( Sum_{n>=1} 2*Pell(n)^2 * x^n/n ), where Pell(n) = A000129(n).at n=8A208034
• Record values of A018799 (Smallest nonnegative integer m such that m! begins with n in base 10).at n=40A279089
• Triangle read by rows: T(n,k) is the number of fundamental one-dimensional discrete statistical models with rational maximum likelihood estimator supported on the n-dimensional probability simplex and of degree 2n-k (n>=1, 1<=k<=n).at n=27A386841