4219139

Appears in sequences

• Number of equivalence classes of Dyck paths of semilength n for the string uuu.at n=21A274114
• Number of n X 2 0..1 arrays with every element both equal and not equal to some elements at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.at n=14A278274