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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..81

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: A222620 A262069 A082208 * A099165 A239480 A117055

Adjacent sequences:  A201058 A201059 A201060 * A201062 A201063 A201064

KEYWORD

nonn,base

AUTHOR

Jaroslav Krizek, Nov 26 2011

STATUS

approved

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Last modified June 15 22:06 EDT 2021. Contains 345053 sequences. (Running on oeis4.)