A178369 Numbers with rounded up arithmetic mean of digits = 9.

9, 89, 98, 99, 799, 889, 898, 899, 979, 988, 989, 997, 998, 999, 6999, 7899, 7989, 7998, 7999, 8799, 8889, 8898, 8899, 8979, 8988, 8989, 8997, 8998, 8999, 9699, 9789, 9798, 9799, 9879, 9888, 9889, 9897, 9898, 9899, 9969, 9978, 9979, 9987, 9988, 9989, 9996

Offset: 1

Author

Reinhard Zumkeller, May 27 2010

Keywords

• base
• nonn

Comments

A004427(a(n)) = 9;

A000027 = union of A178361, A178362, A178363, A178364, A178365, A178366, A178367, A178368, and this sequence.

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..2000

Programs

Mathematica

Select[Range[10000],Ceiling[Mean[IntegerDigits[#]]]==9&] (* Harvey P. Dale, Apr 25 2014 *)