20092

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 86 ones.at n=23A031854
• Numbers n such that 227*2^n-1 is prime.at n=20A050865
• Expansion of 1/sqrt(1-4*x-64*x^2).at n=5A098456
• Number of rooted ordered trees with n non-root nodes such that the branch lengths are weakly increasing.at n=17A246565
• Numbers n such that (6k-1) for k=n, n+1, n+2, n+3 are all primes with no primes of the form (6k+1) in between.at n=21A296011
• Square array A(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of 1/sqrt(1 - 4*x - (2*k*x)^2).at n=50A387466