|
| |
|
|
A161020
|
|
All the non-repdigit terms of A160818.
|
|
1
|
|
|
|
370, 407, 481, 518, 592, 629, 370370, 407407, 481481, 518518, 592592, 629629, 370370370, 407407407, 456790123, 469135802, 481481481, 493827160, 506172839, 518518518, 530864197, 543209876, 592592592, 629629629, 370370370370
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
All known terms are multiples of 111/3 = 37.
Non-repdigit numbers n such that ((10^A055642(n)-1)/9)*(A007953(n)/A055642(n)) = n. So the sequence is infinite. - Altug Alkan, Sep 05 2016
|
|
|
LINKS
|
Table of n, a(n) for n=1..25.
|
|
|
EXAMPLE
|
For example with 370: (073+037+307+370+703+730)/6 = 370.
|
|
|
MAPLE
|
read("transforms3") ; isrep := proc(n) if nops(convert(convert(n, base, 10), set)) = 1 then true; else false; fi; end: a160818 := BFILETOLIST("b160818.txt") ; for i from 1 to 400 do a := op(i, a160818) ; if not isrep(a) then printf("%d, ", a) ; fi; od: # R. J. Mathar, Jul 04 2009
|
|
|
CROSSREFS
|
Cf. A160818, A275772, A275945.
Sequence in context: A108772 A224562 A276413 * A102618 A225104 A234985
Adjacent sequences: A161017 A161018 A161019 * A161021 A161022 A161023
|
|
|
KEYWORD
|
base,nonn
|
|
|
AUTHOR
|
Johan Särnbratt, Jun 02 2009
|
|
|
EXTENSIONS
|
More terms from R. J. Mathar, Jul 04 2009
|
|
|
STATUS
|
approved
|
| |
|
|
