Least numbers m such that GCD of two consecutive values of cototients, i.e., gcd(cototient(m+1), cototient(m)) equals 2n - 1.

A070017

Least numbers m such that GCD of two consecutive values of cototients, i.e., gcd(cototient(m+1), cototient(m)) equals 2n - 1.

Terms

    a(0) =2a(1) =9a(2) =38a(3) =392a(4) =135a(5) =120a(6) =362a(7) =116a(8) =745a(9) =1183a(10) =294a(11) =528a(12) =1395a(13) =428a(14) =1378a(15) =2602a(16) =1185a(17) =203a(18) =2313a(19) =3042a(20) =1966a(21) =3549a(22) =1431a(23) =551a(24) =7838a(25) =4076a(26) =473a(27) =2635a(28) =903a(29) =2044

External references