A044991 - OEIS

A044991

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

8, 17, 23, 25, 44, 50, 52, 68, 70, 76, 125, 131, 133, 149, 151, 157, 203, 205, 211, 229, 368, 374, 376, 392, 394, 400, 446, 448, 454, 472, 608, 610, 616, 634, 688, 1097, 1103, 1105, 1121, 1123, 1129, 1175, 1177, 1183, 1201, 1337

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

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..46.

MATHEMATICA

Select[Range[1500], DigitCount[#, 3, 0]==0&&DigitCount[#, 3, 2]==2&] (* Harvey P. Dale, Dec 12 2019 *)

CROSSREFS

Cf. A007089.

Sequence in context: A026231 A088488 A031458 * A063594 A110474 A118066

Adjacent sequences: A044988 A044989 A044990 * A044992 A044993 A044994

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved