204347

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 21.at n=21A031699
• Number of necklaces with 10 black beads and n-10 white beads.at n=16A032195
• n sets a new record in A094830.at n=13A094878
• a(n) is the number of 2n-regular circulant graphs of order 53.at n=10A367554
• a(n) is the number of 2n-regular circulant graphs of order 53.at n=16A367554