9828225
domain: N
Appears in sequences
- a(n) = (4*n^2 - 1)^2.at n=28A069075
- Odd abundant numbers whose abundance is odd.at n=23A156942
- Odd abundant numbers k for which sigma(k) == 3 (mod 4).at n=13A325311
- Odd squares k for which A379113(k) > 1, i.e., k that have a proper unitary divisor d > 1 such that A048720(A065621(sigma(d)),sigma(k/d)) is equal to sigma(k).at n=18A379121