A044990 Numbers whose base-3 representation contains no 0's and exactly one 2.

2, 5, 7, 14, 16, 22, 41, 43, 49, 67, 122, 124, 130, 148, 202, 365, 367, 373, 391, 445, 607, 1094, 1096, 1102, 1120, 1174, 1336, 1822, 3281, 3283, 3289, 3307, 3361, 3523, 4009, 5467, 9842, 9844, 9850, 9868, 9922, 10084, 10570, 12028

Offset

1,1

Links

Table of n, a(n) for n=1..44.

Mathematica

Select[Range[12500], DigitCount[#, 3, 0]==0&&DigitCount[#, 3, 2]==1&] (* Harvey P. Dale, Sep 06 2019 *)

Crossrefs

Cf. A007089.

Sequence in context: A338205 A230301 A031457 * A266259 A133146 A217753

Adjacent sequences: A044987 A044988 A044989 * A044991 A044992 A044993

Keyword

nonn,base

Author

Clark Kimberling

Status

approved