a(n) = a(n-1) + rotate( a(n-1), 1 digit right), a(1) = 1.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =16a(5) =77a(6) =154a(7) =569a(8) =1525a(9) =6677a(10) =14344a(11) =55778a(12) =141355a(13) =655490a(14) =721039a(15) =1693142a(16) =3862456a(17) =10248701a(18) =21273571a(19) =33400928a(20) =116741020a(21) =128415122a(22) =341256634a(23) =775382297a(24) =1552920526a(25) =7708212578a(26) =16479033835a(27) =68126937218a(28) =154939630939