1126896

Appears in sequences

• Trajectory of 1 under map n->49n+1 if n odd, n->n/2 if n even.at n=13A033980
• a(n) is the number of quadruples (a_1, a_2, a_3, a_4) having all terms in {1,...,n} such that there exists a quadrilateral with these side lengths.at n=34A346636