2670332

Appears in sequences

• a(n) is the number of permutations of length n that avoid the pattern 321 and the mesh pattern (12, 317) or the same sequence for the mesh patterns (12, 377), (12, 407), (12, 467).at n=14A289610
• Number of noncrossing path sets on n nodes up to rotation with isolated vertices allowed.at n=13A303836