152112

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 65.at n=5A031743
• Number of permutations of {1,2,...n} for which differences of adjacent numbers are all distinct.at n=9A131529
• A transform of floor((n+2)/2) with Hankel transform floor((n+2)/2)*(cos(Pi*n/2) + sin(Pi*n/2)).at n=16A134389
• a(n) = Sum_{k=1..n} mu(k) * (floor(n/k)^4 - floor((n-1)/k)^4).at n=35A344597