75516

Appears in sequences

• a(n) = 4*binomial(4*n+11, n)/(n+4).at n=5A006635
• Number of n X n 0..11 matrices with all row and column sums equal.at n=3A067219
• Numbers k such that k^2 divides 5^k-1.at n=39A127105
• Number of nX2 1..3 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in increasing order.at n=28A166814
• Triangle T(n,m) read by rows, obtained from [A(x)]^m = Sum_{n>=m} T(n,m)*x^n, where A(x) (the g.f. for A069271) satisfies 2*x^2*A(x)^3 = 1 - 2*x*A(x) - sqrt(1-4*x*A(x)).at n=60A188108
• Number of 3 X 3 0..n arrays with row and column sums equal.at n=10A202785
• Number of strong triangulations of a fixed square with n interior vertices.at n=7A242136
• Triangle read by rows. T(n,k) = Sum_{j=0..k} binomial(k-j+2, 2)*T(n-1, j), for n>=0, 0<=k<=n, with T(0,0)=1 and T(n,n)=0 for n>0.at n=50A339350
• Array read by antidiagonals: T(n,k) is the number of rooted strong triangulations of a disk with n interior nodes and 3+k nodes on the boundary.at n=43A341856