A number n is included in the sequence if and only if the n-th integer from among those positive integers which are coprime to n+1 = the (n+1)-st integer from among those positive integers which are coprime to n.
A139766
A number n is included in the sequence if and only if the n-th integer from among those positive integers which are coprime to n+1 = the (n+1)-st integer from among those positive integers which are coprime to n.
Terms
- a(0) =3a(1) =15a(2) =104a(3) =164a(4) =255a(5) =2625a(6) =2834a(7) =11715a(8) =18315a(9) =48704a(10) =49215a(11) =64004a(12) =65535a(13) =73124a(14) =131144a(15) =215775a(16) =491535a(17) =525986a(18) =546272a(19) =568815a(20) =952575a(21) =1925564a(22) =5781434a(23) =5861583a(24) =13496384a(25) =14409548a(26) =17646615a(27) =17949434a(28) =20171384a(29) =21475124
External references
- oeis: A139766