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A343883
Numbers k such that
A023896
(k) is a multiple of
A340179
(k).
0
3, 4, 6, 8, 10, 16, 30, 54
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OFFSET
1,1
COMMENTS
Conjecture: there are only 8 terms.
LINKS
Table of n, a(n) for n=1..8.
EXAMPLE
a(6) = 16 is a term because
A023896
(16) = 64 is a multiple of
A340179
(16) = 32.
MAPLE
filter:= proc(n) local S, s, t;
S:= select(t -> igcd(t, n)=1, [$1..n-1]);
s:= nops(S)*n/2;
s mod add(s mod t, t=S) = 0;
end proc:
select(filter, [$3..1000]);
CROSSREFS
Cf.
A023896
,
A340179
.
Sequence in context:
A120150
A262892
A109441
*
A277319
A176986
A325455
Adjacent sequences:
A343880
A343881
A343882
*
A343884
A343885
A343886
KEYWORD
nonn
,
more
AUTHOR
J. M. Bergot
and
Robert Israel
, May 02 2021
STATUS
approved
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Last modified August 26 01:13 EDT 2024. Contains 375454 sequences. (Running on oeis4.)