10*n analog to Keith numbers.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =7a(7) =8a(8) =9a(9) =14a(10) =19a(11) =28a(12) =56a(13) =176a(14) =904a(15) =3347a(16) =4795a(17) =5301a(18) =9775a(19) =10028a(20) =16165a(21) =16715a(22) =35103a(23) =49693a(24) =111039a(25) =191103a(26) =370287a(27) =439385a(28) =845772a(29) =1727706