205326

Appears in sequences

• Least k such that first k terms of A022303 contain n more 1's than 2's.at n=27A025517
• Coefficient of x^n in product (1+x)*Product_{j>=1} (1 + prime(j)*x^j).at n=18A147544
• Number of unordered pairs of self-avoiding paths whose sets of nodes are disjoint subsets of a set of n points on a circle; one-node paths are allowed.at n=8A360717
• Triangle read by rows: T(n,k) is the number of sets of noncrossing paths of size k whose nodes are a subset of n nodes arranged in a circle with one node paths allowed, 0 <= k <= n.at n=47A390897