A343904 Composite numbers k such that k is divisible by A318996(k).

4, 45, 304, 464, 1870, 6048, 14421, 119072, 130304, 561824, 1736150, 8124416, 9519296, 16303104, 26409026

Offset: 1

Author

J. M. Bergot and Robert Israel, May 03 2021

Keywords

• nonn
• more

Examples

			a(4) = 464 is a member because it is composite and is divisible by A318996(k) = 16.
		

Crossrefs

Cf. A318996.

Programs

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]);