Consider a decimal number of k>=2 digits x = d_(k)*10^(k-1) + d_(k-1)*10^(k-2) + … + d_(2)*10 + d_(1) and the transform T(x)-> (d_(k)+d_(k-1) mod 10)*10^(k-1) + (d_(k-1)+d_(k-2) mod 10)*10^(k-2) + … + (d_(2)+d_(1) mod 10)*10 + (d_(1)+d(k) mod 10). Sequence lists the numbers x such that x divides T(x).
A244287
Consider a decimal number of k>=2 digits x = d_(k)*10^(k-1) + d_(k-1)*10^(k-2) + … + d_(2)*10 + d_(1) and the transform T(x)-> (d_(k)+d_(k-1) mod 10)*10^(k-1) + (d_(k-1)+d_(k-2) mod 10)*10^(k-2) + … + (d_(2)+d_(1) mod 10)*10 + (d_(1)+d(k) mod 10). Sequence lists the numbers x such that x divides T(x).
Terms
- a(0) =11a(1) =19a(2) =22a(3) =28a(4) =33a(5) =37a(6) =44a(7) =46a(8) =55a(9) =64a(10) =73a(11) =82a(12) =91a(13) =111a(14) =157a(15) =222a(16) =333a(17) =444a(18) =555a(19) =1111a(20) =1919a(21) =2222a(22) =2828a(23) =3333a(24) =3737a(25) =4444a(26) =4646a(27) =5555a(28) =6464a(29) =7373
External references
- oeis: A244287