Number of Niven numbers <= 10^n.

Terms

a(0) =10a(1) =33a(2) =213a(3) =1538a(4) =11872a(5) =95428a(6) =806095a(7) =6954793a(8) =61574510a(9) =553007106a(10) =5024332415a(11) =45975917532a(12) =422675487735