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A037419 Positive integers n such that the set of base-3 digits of n equals the set of base-7 digits of n. 1
1, 2, 51, 63, 99, 105, 345, 351, 357, 358, 359, 401, 406, 441, 442, 443, 449, 457, 687, 693, 694, 695, 702, 735, 736, 737, 749, 785, 791, 2403, 2410, 2415, 2416, 2417, 2452, 2457, 2458, 2459, 2464, 2465, 2499, 2500, 2501, 2506, 2507, 2508, 2513 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Rémy Sigrist, Table of n, a(n) for n = 1..10000

MATHEMATICA

Select[Range[2600], Union[IntegerDigits[#, 3]]==Union[IntegerDigits[#, 7]]&]  (* Harvey P. Dale, Mar 11 2011 *)

PROG

(PARI) isok(n) = Set(digits(n, 3)) == Set(digits(n, 7)); \\ Michel Marcus, Jan 22 2017

CROSSREFS

Sequence in context: A203746 A230561 A057943 * A078165 A180110 A037058

Adjacent sequences:  A037416 A037417 A037418 * A037420 A037421 A037422

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

EXTENSIONS

Corrected by Don Reble, Apr 28 2006

STATUS

approved

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Last modified May 26 00:04 EDT 2019. Contains 323576 sequences. (Running on oeis4.)