609840

Appears in sequences

• Number of permutations with self-conjugate cycle types.at n=10A090694
• Highly abundant numbers (A002093) that are not Harshad numbers (A005349).at n=9A128702
• Highly abundant numbers (A002093) whose largest prime factor has power greater than 1.at n=26A181310
• Expansion of 140*x*(1 + 4*x + x^2) / (1 - x)^5.at n=10A317984
• List of e-perfect numbers that are not e-unitary perfect.at n=9A322858
• Numbers k such that k and the next two numbers after k with the same prime signature as k also have the same set of distinct prime divisors as k.at n=8A340303
• Numbers k such that A065642(k) = A081761(k).at n=15A340306