666697

Properties

Appears in sequences

• 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 56.at n=25A031644
• Balanced primes (A090403) of index 4.at n=23A096708
• Nodes of tree generated as follows: (1,2) is an edge, and if (x,y) is an edge, then (y, y^2 - x^2) and (y, y^2 + x^2) are edges.at n=32A228940
• Primes congruent to 67 mod 12345.at n=10A379371
• Prime numbersat n=54073