Smallest k such that n, k and n+k have the same prime signature (canonical form), or 0 if no such number exists.
A085080
Smallest k such that n, k and n+k have the same prime signature (canonical form), or 0 if no such number exists.
Terms
- a(0) =0a(1) =3a(2) =2a(3) =0a(4) =2a(5) =15a(6) =0a(7) =0a(8) =0a(9) =55a(10) =2a(11) =63a(12) =0a(13) =21a(14) =6a(15) =0a(16) =2a(17) =45a(18) =0a(19) =637a(20) =14a(21) =33a(22) =0a(23) =351a(24) =0a(25) =39a(26) =0a(27) =147a(28) =2a(29) =165
External references
- oeis: A085080