A037432 Positive numbers having the same set of digits in base 5 and base 9.

1, 2, 3, 4, 11, 22, 121, 181, 199, 362, 849, 895, 900, 911, 994, 1074, 1084, 1495, 1703, 1711, 1723, 1739, 1794, 1800, 1813, 1822, 2225, 2287, 2288, 2299, 2385, 2469, 2513, 2515, 2945, 3001, 3006, 3034, 3117, 3249, 6582, 6663, 6759, 6761

Offset: 1

Author

Clark Kimberling

Keywords

• nonn
• base

Examples

			362 is in the sequence because 362 in base 5 is 2422 and in base 9 it is 442.
		

Links

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

Crossrefs

Subsequence of A037396.

Programs

Mathematica

Select[Range[7000],Union[IntegerDigits[#,5]]==Union[IntegerDigits[#,9]]&]  (* Harvey P. Dale, Mar 08 2011 *)

PARI

is(n)=Set(digits(n,5))==Set(digits(n,9)) \\ Charles R Greathouse IV, Feb 11 2017

Extensions

More terms from Don Reble, Apr 28 2006