A393966 Numbers k which are not divisible by their digital root A010888(k).

11, 13, 14, 15, 16, 17, 22, 23, 25, 26, 29, 31, 32, 33, 34, 35, 41, 43, 44, 47, 49, 51, 52, 53, 58, 59, 61, 62, 65, 67, 68, 69, 71, 77, 79, 83, 85, 86, 87, 88, 89, 94, 97, 98, 101, 103, 104, 105, 106, 107, 113, 115, 116, 119, 121, 122, 123, 124, 125, 130, 131, 134, 137, 139

Offset

1,1

Links

Paolo Xausa, Table of n, a(n) for n = 1..10000

Example

167 is a term because 167 is not divisible by 5 (1 + 6 + 7 = 14 and 1 + 4 = 5).

Mathematica

Select[Range[200], !Divisible[#, Mod[# - 1, 9] + 1] &]

Crossrefs

Complement of A064807.

Cf. A010888.

Sequence in context: A043700 A111634 A065877 * A290468 A129917 A102577

Adjacent sequences: A393963 A393964 A393965 * A393967 A393968 A393969

Keyword

nonn,base,easy

Author

Paolo Xausa, Mar 11 2026

Status

approved