Admirable totient numbers: numbers that are equal to the sum of their iterated phi, with one of them taken with a minus sign.
A335121
Admirable totient numbers: numbers that are equal to the sum of their iterated phi, with one of them taken with a minus sign.
Terms
- a(0) =5a(1) =7a(2) =33a(3) =35a(4) =55a(5) =87a(6) =95a(7) =175a(8) =201a(9) =215a(10) =219a(11) =245a(12) =531a(13) =747a(14) =927a(15) =939a(16) =1047a(17) =1295a(18) =1463a(19) =1473a(20) =1551a(21) =1855a(22) =2015a(23) =2103a(24) =2421a(25) =2431a(26) =2547a(27) =2619a(28) =2631a(29) =2765
External references
- oeis: A335121