67144

Appears in sequences

• Number of relatively prime strict compositions of n with no 1's.at n=38A337451
• Starts of runs of 3 consecutive tribonacci-Niven numbers (A352089).at n=31A352091
• Start with {1}, then at each step replace it with the set of all pairwise products and sums of its elements (an element can be paired with itself). a(n) gives the number of elements after n-th step.at n=6A352969
• Number of edges among all distinct circles that can be constructed from an n X n square grid of points when each pair of points is connected by a circle and the points lie at the ends of a diameter of the circle.at n=4A360353