Minimal number m such that Sum_digits(n*m)=n.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =1a(9) =19a(10) =19a(11) =4a(12) =19a(13) =19a(14) =13a(15) =28a(16) =28a(17) =11a(18) =46a(19) =199a(20) =19a(21) =109a(22) =73a(23) =37a(24) =199a(25) =73a(26) =37a(27) =271a(28) =172a(29) =1333