Beginning of a run of 4 consecutive Niven (or Harshad) numbers.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =7a(7) =510a(8) =1014a(9) =2022a(10) =3030a(11) =10307a(12) =12102a(13) =12255a(14) =13110a(15) =60398a(16) =61215a(17) =93040a(18) =100302a(19) =101310a(20) =110175a(21) =122415a(22) =127533a(23) =131052a(24) =131053a(25) =196447a(26) =201102a(27) =202110a(28) =220335a(29) =223167