43993

Appears in sequences

• S_11 sequence in partition of integers > 1 described in A240521.at n=13A241024
• Number of distinct intersections among all circles that can be constructed on vertices of an n-sided regular polygon, using only a compass.at n=23A331702
• Number of subsets of [n] avoiding 3-term arithmetic progressions and containing n if n>0.at n=25A334893
• Denominators of s in rational solutions of s^4 + s^3 + s^2 + s + 1 = y^2 with |s| <= 1.at n=6A339326