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A037428
Positive numbers having the same set of digits in base 4 and base 10.
2
1, 2, 3, 13, 31, 123, 203, 231, 1031, 1103, 1120, 1203, 1230, 1303, 2103, 2120, 2201, 2300, 2301, 2302, 2303, 3012, 3020, 3021, 3022, 3023, 3100, 3101, 3102, 3103, 3200, 3201, 3202, 3203, 3320, 10023, 10032, 10123, 10132, 10232, 10323, 10332
OFFSET
1,2
EXAMPLE
1103 is in the sequence because 1103 in base 4 is 101033.
MATHEMATICA
Select[Range[33333], Union[IntegerDigits[#]]==Union[IntegerDigits[#, 4]]&] (* Harvey P. Dale, Jan 01 2023 *)
PROG
(PARI) is(n)=Set(digits(n, 4))==Set(digits(n)) \\ Charles R Greathouse IV, Feb 11 2017
CROSSREFS
Subsequence of A007090 and A037392.
Sequence in context: A317187 A296291 A072997 * A073688 A299967 A216359
KEYWORD
nonn,base
EXTENSIONS
Corrected by Don Reble, Apr 28 2006
Edited by John Cerkan, Feb 09 2017
STATUS
approved