20595

Appears in sequences

• a(n+1) = Sum_{k=0..floor(4*n/5)} a(k) * a(n-k).at n=14A030039
• Number of prime pairs below 10^n having a difference of 52.at n=7A093980
• Triangle read by rows: T(n,k) is the number of Dyck n-paths with k large components, 0 <= k <= n/2.at n=45A097877
• Number of nondecreasing arrangements of 4 numbers in -(n+2)..(n+2) with sum zero.at n=41A188212
• Number of 4-element subsets that can be chosen from {1,2,...,4*n} having element sum 8*n+2.at n=23A204468
• Number of (w,x,y) with all terms in {0,...,n} and w <= x + y and x < y.at n=36A212981
• Number of compositions (ordered partitions) of n into prime parts such that no two adjacent parts are equal (Carlitz compositions).at n=37A301428
• Expansion of Sum_{1<=i<=j} q^(i+j)/( (1-q^i)*(1-q^j) )^2.at n=38A374929
• a(0) = 1; a(n) = Sum_{k=0..n-1} binomial(k+6,6) * a(k) * a(n-1-k).at n=4A385955