21699

Appears in sequences

• [ (4th elementary symmetric function of S(n))/(2nd elementary symmetric function of S(n)) ], where S(n) = {first n+3 positive integers congruent to 2 mod 3}.at n=16A024402
• a(n) = n*(94 + 5*n + 25*n^2 - 5*n^3 + n^4)/120.at n=20A057703
• Triangle read by rows of numbers of paths in a lattice satisfying certain conditions.at n=47A071950
• Number of compositions of n in which the smallest part is equal to the number of parts.at n=48A098133
• a(n) = A000043(n)-2.at n=24A153798
• Riordan matrix (g(x),x*g(x)), where g(x) = (1-x-sqrt(1-2*x-3*x^2-4*x^3))/(2*x^2*(1+x)).at n=67A190252
• Array read by descending antidiagonals: T(n,k) is the number of ways to partition n X n X n cube into k noncongruent cuboids.at n=71A386296