login
A343904
Composite numbers k such that k is divisible by A318996(k).
0
4, 45, 304, 464, 1870, 6048, 14421, 119072, 130304, 561824, 1736150, 8124416, 9519296, 16303104, 26409026
OFFSET
1,1
EXAMPLE
a(4) = 464 is a member because it is composite and is divisible by A318996(k) = 16.
MAPLE
filter:= proc(n) local D, s, d, v;
if isprime(n) then return false fi;
D:= numtheory:-divisors(n);
s:= convert(D, `+`);
v:= add(s mod d, d = D);
v > 0 and n mod v = 0
end proc:
select(filter, [$4..3*10^7]);
CROSSREFS
Cf. A318996.
Sequence in context: A123650 A371003 A122910 * A117644 A232729 A055602
KEYWORD
nonn,more
AUTHOR
J. M. Bergot and Robert Israel, May 03 2021
STATUS
approved