62808

Appears in sequences

• Numbers n such that A118799(n) = 0.at n=20A118578
• Least integer b>2n+1 such that the numbers written as [1,3,...,2n-1,2n+1] and [2n+1,2n-1,...,3,1] in base b are both prime.at n=28A218465
• p-INVERT of the positive integers, where p(S) = 1 - 2*S^2.at n=10A290904
• a(n) = Sum_{k=1..n} binomial(2*k, k) * A000005(k).at n=7A356373