Odd numbers m for which A379113(m^2) > 1, i.e., k = m^2 has a proper unitary divisor d > 1 such that A048720(A065621(sigma(d)),sigma(k/d)) is equal to sigma(k).
A379122
Odd numbers m for which A379113(m^2) > 1, i.e., k = m^2 has a proper unitary divisor d > 1 such that A048720(A065621(sigma(d)),sigma(k/d)) is equal to sigma(k).
Terms
- a(0) =15a(1) =55a(2) =57a(3) =111a(4) =171a(5) =195a(6) =303a(7) =465a(8) =497a(9) =595a(10) =639a(11) =867a(12) =879a(13) =925a(14) =959a(15) =1169a(16) =1263a(17) =1953a(18) =3135a(19) =3345a(20) =3489a(21) =3565a(22) =5425a(23) =6923a(24) =7239a(25) =8153a(26) =8215a(27) =8801a(28) =8959a(29) =9703
External references
- oeis: A379122