26125

Appears in sequences

• Denominators of continued fraction convergents to sqrt(541).at n=10A042035
• Numbers m such that [A070080(m), A070081(m), A070082(m)] is a right integer triangle.at n=29A070136
• Numbers k such that [A070080(k), A070081(k), A070082(k)] is a right integer triangle with relatively prime side lengths.at n=10A070137
• Least inverse of A114912, or -1 if no inverse exists.at n=22A115251
• Numbers k such that k and k^2 use only the digits 1, 2, 5, 6 and 8.at n=28A137005
• Number of permutations of 1..n avoiding adjacent step pattern up, down, down, up.at n=8A177519
• Indices of octagonal numbers which are also decagonal.at n=2A203625
• Number T(n,k) of permutations of [n] with exactly k (possibly overlapping) occurrences of the consecutive step pattern up, down, down, up; triangle T(n,k), n>=0, 0<=k<=max(0,floor((n-2)/3)), read by rows.at n=11A230695
• Numbers n such that psi(n) = 2*phi(n).at n=25A292390