Let x(1)x(2)...x(q) the decimal expansion of the numbers k having exactly q distinct prime divisors p(1) < p(2) < ... < p(q). Sequence lists the numbers k such that p(1)/x(1) + p(2)/x(2) + ... + p(q)/x(q) is an integer.
A235152
Let x(1)x(2)...x(q) the decimal expansion of the numbers k having exactly q distinct prime divisors p(1) < p(2) < ... < p(q). Sequence lists the numbers k such that p(1)/x(1) + p(2)/x(2) + ... + p(q)/x(q) is an integer.
Terms
- a(0) =2a(1) =3a(2) =5a(3) =7a(4) =15a(5) =222a(6) =555a(7) =666a(8) =834a(9) =1122a(10) =2442a(11) =3162a(12) =4818a(13) =6162a(14) =6216a(15) =8274a(16) =8554a(17) =28842a(18) =49266a(19) =49434a(20) =61446a(21) =69762a(22) =83334a(23) =88638a(24) =88842a(25) =89838a(26) =641886a(27) =648186a(28) =795795a(29) =892164
External references
- oeis: A235152