256661

Properties

Appears in sequences

• a(n) = floor(C(2n,n)/2^n).at n=21A024502
• 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 40.at n=18A031628
• Where records occur in A144261.at n=16A144364
• Prime numbersat n=22577