a(n) = sum of numbers k <= sigma(n) such that k is not equal to sigma(d) for any divisor d of n where sigma = A000203.
A206029
a(n) = sum of numbers k <= sigma(n) such that k is not equal to sigma(d) for any divisor d of n where sigma = A000203.
Terms
- a(0) =0a(1) =2a(2) =5a(3) =17a(4) =14a(5) =58a(6) =27a(7) =94a(8) =73a(9) =143a(10) =65a(11) =351a(12) =90a(13) =264a(14) =265a(15) =439a(16) =152a(17) =708a(18) =189a(19) =826a(20) =483a(21) =614a(22) =275a(23) =1700a(24) =458a(25) =843a(26) =762a(27) =1497a(28) =434a(29) =2488
External references
- oeis: A206029