188640

Appears in sequences

• Surround numbers of an n X 2 rectangle when n is even.at n=16A061524
• Expansion of (chi(-x) * chi(-x^3))^-3 in powers of x where chi() is a Ramanujan theta function.at n=23A229180
• Number of unordered pairs of self-avoiding paths with nodes that cover all vertices of a convex n-gon; one-node paths are allowed.at n=9A359405
• Triangle read by rows: T(n,k) is the number of sets of noncrossing paths of size k that cover n nodes arranged in a circle with one node paths allowed, 0 <= k <= n.at n=57A390894