Sum of divisors of those 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).
A379125
Sum of divisors of those 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).
Terms
- a(0) =403a(1) =4123a(2) =4953a(3) =18291a(4) =46101a(5) =73749a(6) =133939a(7) =400179a(8) =291441a(9) =542469a(10) =618673a(11) =1153633a(12) =1119859a(13) =1098867a(14) =1077699a(15) =1599249a(16) =2309619a(17) =6848721a(18) =20421219a(19) =20131059a(20) =17598529a(21) =17022999a(22) =44205381a(23) =59669253a(24) =80520921a(25) =68946969a(26) =88131729a(27) =83998281a(28) =88119813a(29) =97595019
External references
- oeis: A379125