61865

Appears in sequences

• Number of 5-tuples of different integers from [ 2,n ] with no common factors among triples.at n=30A015649
• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 26.at n=10A031614
• Matrix 10th power of partition triangle A008284.at n=47A050304