40669

Appears in sequences

• Number of maximal antichains in rooted plane trees on n nodes.at n=9A007853
• Composite and every divisor (except 1) contains the digit 6.at n=8A062674
• Number of nX3 0..1 arrays with every element unequal to 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=11A318209