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A031984 Numbers with exactly five distinct base-7 digits. 1
2524, 2525, 2526, 2530, 2532, 2533, 2537, 2538, 2540, 2544, 2545, 2546, 2566, 2567, 2568, 2578, 2581, 2582, 2585, 2587, 2589, 2592, 2594, 2595, 2614, 2616, 2617, 2620, 2623, 2624, 2634, 2635, 2638, 2641, 2642, 2644 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..10000

MATHEMATICA

Select[Range[2700], Length[Union[IntegerDigits[#, 7]]]==5&] (* Harvey P. Dale, Feb 11 2020 *)

CROSSREFS

Cf. A007093.

Sequence in context: A096026 A278003 A308736 * A045213 A251918 A111729

Adjacent sequences:  A031981 A031982 A031983 * A031985 A031986 A031987

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified September 23 19:48 EDT 2021. Contains 347617 sequences. (Running on oeis4.)