924160

Appears in sequences

• The number of permutations of length n that can be sorted by 2 pop stacks in parallel.at n=11A164870
• Number of (n+1) X (7+1) 0..2 arrays colored with the upper median value of each 2 X 2 subblock.at n=17A235953
• Number T(n,k) of endofunctions f on [n] satisfying f^3(i) = i for all i in [k]; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=38A245958