365079

Appears in sequences

• Number of nonempty subsets of {1,2,...,n} in which exactly 4/5 of the elements are <= (n+3)/3.at n=35A048090
• a(n) = n*(n+1)*(9*n^2 - n - 5)/6.at n=22A172075
• Number of 3 X n binary arrays with rows and columns lexicographically nondecreasing and column sums nondecreasing.at n=20A266429