171465

Appears in sequences

• a(n) = n*(2*n-1)*(2*n+1).at n=35A035328
• Numbers n such that the sum of the divisors of n equals the fourth power of the sum of the digits of n.at n=10A260598
• Smallest fixed points (>0) of the base-2*n Kaprekar map.at n=34A319839
• Number T(n,k) of permutations of [n] having k cycles of the form (c1, c2, ..., c_m) where c1 = min_{i>=1} c_i and c_j = min_{i>=j} c_i or c_j = max_{i>=j} c_i; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=60A344855
• Number of permutations of [2n] having n cycles of the form (c1, c2, ..., c_m) where c1 = min_{i>=1} c_i and c_j = min_{i>=j} c_i or c_j = max_{i>=j} c_i.at n=5A345342
• Number of permutations of [n] having five cycles of the form (c1, c2, ..., c_m) where c1 = min_{i>=1} c_i and c_j = min_{i>=j} c_i or c_j = max_{i>=j} c_i.at n=5A346320