Numbers k for which phi(A267099(k)) is equal to phi(k), but the number of 4m+1 and 4m+3 primes in the prime factorization of k (when counted with multiplicity) is not equal. Here A267099 is fully multiplicative involution swapping the positions of 4m+1 and 4m+3 primes, and phi is Euler totient function.
A354194
Numbers k for which phi(A267099(k)) is equal to phi(k), but the number of 4m+1 and 4m+3 primes in the prime factorization of k (when counted with multiplicity) is not equal. Here A267099 is fully multiplicative involution swapping the positions of 4m+1 and 4m+3 primes, and phi is Euler totient function.
Terms
- a(0) =69037a(1) =70807a(2) =76635a(3) =79577a(4) =81631a(5) =82425a(6) =88335a(7) =95025a(8) =138074a(9) =141614a(10) =149209a(11) =153270a(12) =153703a(13) =159154a(14) =163262a(15) =164850a(16) =171989a(17) =176670a(18) =177199a(19) =190050a(20) =276148a(21) =283228a(22) =298418a(23) =306540a(24) =307406a(25) =318308a(26) =326524a(27) =329700a(28) =343978a(29) =353340
External references
- oeis: A354194