114972

Appears in sequences

• Number of reversible strings with n-1 beads of 2 colors. 6 beads are black. Strings are not palindromic.at n=19A032093
• Triangle read by rows, giving Kekulé numbers for certain benzenoids (see the Cyvin-Gutman book for details).at n=42A123353
• Kekulé numbers for certain benzenoids (see the Cyvin-Gutman book for details).at n=6A123355
• Number of permutations p of [n] such that the sequence of ascents and descents of 0p or of 0p0 (if n is odd) forms a Dyck path.at n=9A303284
• Number of permutations p of [2n+1] such that the sequence of ascents and descents of 0p0 forms a Dyck path.at n=4A303286