Numbers k that are multiples of the digital sum of k-1, k and k+1.

Terms

a(0) =12a(1) =300a(2) =420a(3) =1050a(4) =1200a(5) =1530a(6) =1560a(7) =2100a(8) =2310a(9) =3060a(10) =3432a(11) =5814a(12) =6120a(13) =6240a(14) =9600a(15) =9828a(16) =10200a(17) =10710a(18) =10920a(19) =11100a(20) =11130a(21) =11628a(22) =11700a(23) =12240a(24) =13020a(25) =13260a(26) =16800a(27) =17442a(28) =19656a(29) =20100