A037428 Positive numbers having the same set of digits in base 4 and base 10.

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

Links

John Cerkan, Table of n, a(n) for n = 1..10000

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

Adjacent sequences: A037425 A037426 A037427 * A037429 A037430 A037431

Keyword

nonn,base

Author

Clark Kimberling

Extensions

Corrected by Don Reble, Apr 28 2006

Edited by John Cerkan, Feb 09 2017

Status

approved