Niven numbers (A005349) with a record gap to the next Niven number.

Terms

a(0) =1a(1) =10a(2) =12a(3) =63a(4) =72a(5) =90a(6) =288a(7) =378a(8) =558a(9) =2889a(10) =3784a(11) =6480a(12) =19872a(13) =28971a(14) =38772a(15) =297864a(16) =478764a(17) =589860a(18) =989867a(19) =2879865a(20) =9898956a(21) =49989744a(22) =88996914a(23) =689988915a(24) =879987906a(25) =989888823a(26) =2998895823a(27) =6998899824a(28) =8889999624a(29) =8988988866