253920

Appears in sequences

• Area A of the bicentric quadrilaterals such that A, the sides, the radius of the circumcircle and the radius of the incircle are integers.at n=11A219192
• Primitive bicentric quadrilaterals defined in A219192.at n=2A219193
• a(n) = 6*(n - 1)*(81*n - 104) for n >= 1.at n=23A304837
• Number of subsets of {1..n} containing all of their integer quotients > 1.at n=23A326079