A037341 - OEIS

A037341

Numbers whose base-2 and base-7 expansions have no digits in common.

2, 3, 4, 5, 6, 16, 17, 18, 19, 20, 23, 24, 25, 26, 27, 30, 31, 32, 33, 34, 37, 38, 39, 40, 41, 44, 45, 46, 47, 48, 114, 115, 116, 117, 118, 121, 122, 123, 124, 125, 128, 129, 130, 131, 132, 135, 136, 137, 138, 139, 142, 143, 144, 145

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

OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

MATHEMATICA

Select[Range[200], Intersection[IntegerDigits[#, 2], IntegerDigits[#, 7]]=={}&] (* Vincenzo Librandi, Jun 07 2012 *)

CROSSREFS

Sequence in context: A265405 A171610 A004835 * A228730 A062932 A347167

Adjacent sequences: A037338 A037339 A037340 * A037342 A037343 A037344

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved