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A201061
Repdigit numbers with repdigit digital sum.
3
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 22, 33, 44, 111, 222, 333, 1111, 2222, 11111, 111111, 1111111, 11111111, 111111111, 11111111111, 22222222222, 33333333333, 44444444444, 55555555555, 66666666666, 77777777777, 88888888888, 99999999999, 1111111111111111111111
OFFSET
1,3
LINKS
MATHEMATICA
Join[{0}, Select[FromDigits/@Flatten[Table[PadRight[{}, n, d], {n, 23}, {d, 9}], 1], Length[ Union[IntegerDigits[Total[IntegerDigits[#]]]]]==1&]] (* Harvey P. Dale, Feb 03 2019 *)
CROSSREFS
Cf. A201060 (repdigit numbers with repdigit digital product).
Cf. A201064 (repdigit numbers with repdigit digital sum and product).
Sequence in context: A262069 A370052 A082208 * A099165 A239480 A117055
KEYWORD
nonn,base
AUTHOR
Jaroslav Krizek, Nov 26 2011
STATUS
approved