50541

Appears in sequences

• T(n,n-6), where T is the array in A055830.at n=16A055833
• Second elementary symmetric function of the first n terms of (1,1,2,2,3,3,4,4,...).at n=33A203246
• Number of (w,x,y,z) with all terms in {1,...,n} and w+x<y+z.at n=18A212523
• a(n) = n*(n + 1)*(13*n^2 + 13*n - 14)/24.at n=17A264888
• Numbers n such that there is k < n for which A003557(k) = A003557(n), A048250(k) = A048250(n) and A173557(k) = A173557(n).at n=5A296087
• a(n) = Sum_{k=0..floor(n/3)} binomial(k+1,3*n-9*k+1).at n=56A392675