For a rational number p/q let f(p/q) = p*q divided by (the sum of digits of p and of q) minus 1; a(n) is obtained by iterating f, starting at n/1, until an integer is reached, or if no integer is ever reached then a(n) = 0.
A059514
For a rational number p/q let f(p/q) = p*q divided by (the sum of digits of p and of q) minus 1; a(n) is obtained by iterating f, starting at n/1, until an integer is reached, or if no integer is ever reached then a(n) = 0.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =1a(9) =10a(10) =11a(11) =4a(12) =28a(13) =42a(14) =7315a(15) =208a(16) =136a(17) =2a(18) =19a(19) =10a(20) =7a(21) =11a(22) =69a(23) =4a(24) =2310a(25) =28a(26) =3a(27) =42a(28) =319a(29) =10
External references
- oeis: A059514