login
A037341
Numbers whose base-2 and base-7 expansions have no digits in common.
1
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
OFFSET
1,1
LINKS
MATHEMATICA
Select[Range[200], Intersection[IntegerDigits[#, 2], IntegerDigits[#, 7]]=={}&] (* Vincenzo Librandi, Jun 07 2012 *)
CROSSREFS
Sequence in context: A265405 A171610 A004835 * A228730 A062932 A347167
KEYWORD
nonn,base
STATUS
approved