122472

Appears in sequences

• Number of walks on square lattice.at n=23A005565
• Triangle of coefficients in expansion of (3+7x)^n.at n=37A013624
• The second of the three sequences associated with the polynomial x^3 - 2.at n=16A052102
• Invert transform applied twice to Pascal's triangle A007318.at n=39A055373
• Invert transform applied twice to Pascal's triangle A007318.at n=41A055373
• a(n) = 3^n * n*(n + 1).at n=7A116138
• Triangle read by rows: T(n,k) is number of hex trees with n edges and k branches (1 <= k <= n).at n=48A126179
• Triangular sequence based on the coefficients of the magnetic model for q=1/2: p(x,t)=Exp[x*t]*((t^2 + 1/2 - 1)/(2*t + 1/2 - 2))^2.at n=33A137481
• Union of A052103, A052102 and A052101, uniqued and sorted.at n=40A140495
• a(n) = 625*n^2 - 2*n.at n=13A158373
• Bell polynomial B(n,k){3,6,6,0,...,0}.at n=34A187082
• Triangular array: the fusion of polynomial sequences P and Q given by p(n,x) = (x+2)^n and q(n,x) = (2*x+1)^n.at n=42A193728
• Mirror of the triangle A193728.at n=38A193729
• Triangle of coefficients of a sequence of binomial type polynomials.at n=34A195205
• Number of n X 3 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 1 1 and 1 0 1 vertically.at n=11A207724
• Triangle read by rows: T(n,k) is the number of labeled rooted trees of height at most 2 that have exactly k nodes at a distance 2 from the root; n>=1, 0<=k<=n-1.at n=41A216255
• Numbers that divide the product of the nonzero digits (in base 10) of their square.at n=38A218013
• Hankel determinants of order n of A225439(n): a(n)=det[A225439(i+j-2)], i,j=0..n, n>=0.at n=4A227143
• Integer areas of orthic triangles of integer-sided triangles.at n=12A230402
• Triangle read by rows: terms of a binomial decomposition of 0^(n-1) as Sum(k=0..n)T(n,k).at n=38A244129