1200070

Appears in sequences

• Number of permutations of length n by rises.at n=5A001279
• Number of unlabeled alternating octopuses with n black nodes and n white nodes.at n=12A091468
• Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} having k maximal strings of increasing consecutive integers (0<=k<=floor(n/2)).at n=39A136123