A031947 - OEIS

A031947

Numbers in which 0,1,2,3,4,5 all occur in base 6.

8345, 8350, 8375, 8385, 8410, 8415, 8525, 8530, 8585, 8600, 8620, 8630, 8735, 8745, 8765, 8780, 8835, 8840, 8950, 8955, 8980, 8990, 9015, 9020, 10505, 10510, 10535, 10545, 10570, 10575, 11045, 11050, 11165, 11190, 11200, 11220, 11255, 11265, 11345, 11370, 11415

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Contains numbers like 47265, 47290, 47295, 47405 which are absent in A049357. - R. J. Mathar, Aug 24 2023

LINKS

Table of n, a(n) for n=1..41.

MAPLE

isA031947 := proc(n)

convert(convert(n, base, 6), set) ;

if nops(%) = 6 then

true;

else

false;

end if;

end proc:

for n from 1 to 12000 do

if isA031947(n) then

print(n);

end if;

end do: # R. J. Mathar, Aug 24 2023

CROSSREFS

Cf. A007092 (base 6), A023744 (each base 6 digit once).

Sequence in context: A233954 A224465 A049357 * A069402 A202588 A337959

Adjacent sequences: A031944 A031945 A031946 * A031948 A031949 A031950

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved