406980

Appears in sequences

• Number of internal triangles in all triangulations of an (n+1)-gon.at n=8A002058
• a(n) = LCM(binomial(n,0), ..., binomial(n,n)) / binomial(n,floor(n/2)).at n=42A048619
• a(n) = lcm{1, ..., 2n} / binomial(2n, n).at n=21A068550
• Triangle read by rows: T(n,k) is the number of noncrossing forests with n vertices and k components (1<=k<=n).at n=48A094021
• Triangle read by rows: T(n,k) is the number of noncrossing forests with n vertices and k edges.at n=51A094040
• a(n) = A112260(n+1) - A112260(n).at n=17A112261
• a(n) = LCM of the integers b(k), over all k where 1 <= k <= n, where b(k) = the k-th integer from among those positive integers which are coprime to (n+1-k).at n=11A132421
• a(n) = lcm{1,2,...,n} / swinging_factorial(n) = A003418(n) / A056040(n).at n=42A180000
• a(n) = lcm{1,2,...,n} / swinging_factorial(n) = A003418(n) / A056040(n).at n=43A180000
• Number of arrangements of n indistinguishable balls in n boxes with the maximum number of balls in any box equal to 9.at n=6A180289
• Number of arrangements of n indistinguishable balls in n boxes with the maximum number of balls in any box equal to n-6.at n=8A180296
• Numbers with prime factorization pqrst^2u^2.at n=10A190380
• Number of ways to place 3 points on a triangular grid of side n so that they are not vertices of an equilateral triangle of any orientation.at n=15A240440
• Number of preferential arrangements of n labeled elements such that the minimal number of elements per rank equals 8.at n=13A245861
• Cayley's triangle of V numbers; triangle V(n,k), n >= 4, n <= k <= 2*n-4, read by rows.at n=53A259476
• Denominators of first derivatives of Catalan numbers (as continuous functions of n).at n=20A260631
• a(n) = lcm{1,2,...,n} / binomial(n,floor(n/2)).at n=42A263673
• Expansion of (Sum_{k>=0} x^(k^4))^19.at n=36A282288
• Triangle T(n,k) read by rows: coefficients of polynomials P_n(t) defined in Formula section.at n=47A286785