A045255 Numbers whose base-5 representation contains exactly two 1's and no 4's.

6, 26, 30, 32, 33, 36, 41, 56, 81, 126, 130, 132, 133, 136, 141, 150, 152, 153, 160, 162, 163, 165, 167, 168, 176, 180, 182, 183, 186, 191, 201, 205, 207, 208, 211, 216, 256, 276, 280, 282, 283, 286, 291, 306, 331, 381, 401, 405

Offset

1,1

Links

Table of n, a(n) for n=1..48.

Mathematica

Select[Range[500], DigitCount[#, 5, 1]==2&&DigitCount[#, 5, 4]==0&] (* Harvey P. Dale, May 21 2021 *)

Crossrefs

Cf. A007091.

Sequence in context: A154869 A043354 A023727 * A045240 A045225 A038474

Adjacent sequences: A045252 A045253 A045254 * A045256 A045257 A045258

Keyword

nonn,base

Author

Clark Kimberling

Status

approved