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 A339424 Composite numbers k such that A339423(k) divides k. 2
 4, 6, 9, 10, 12, 14, 15, 21, 22, 25, 26, 33, 34, 35, 36, 38, 39, 46, 49, 51, 55, 56, 57, 58, 62, 65, 69, 74, 77, 82, 85, 86, 87, 91, 93, 94, 95, 106, 108, 111, 115, 118, 119, 121, 122, 123, 129, 133, 134, 141, 142, 143, 145, 146, 155, 158, 159, 161, 166, 169, 177, 178, 183, 185, 187, 194, 201 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Robert Israel, Table of n, a(n) for n = 1..10000 EXAMPLE a(5)=12 = 2*2*3 is a term because 2 + 2*2 = 6 divides 12. MAPLE filter:= proc(n)   local F, T, P, j;   if isprime(n) then return false fi;   F:= sort(map(t -> t[1]\$t[2], ifactors(n)[2]));   T:= 0; P:= 1;   for j from 1 to nops(F)-1 do     P:= P*F[j];     T:= T+P;   od;   n mod T = 0 end proc: select(filter, [\$4..1000]); CROSSREFS Cf. A002808, A339423. Union of A001358 and A339425. Sequence in context: A325270 A051278 A328028 * A175127 A174166 A171401 Adjacent sequences:  A339421 A339422 A339423 * A339425 A339426 A339427 KEYWORD nonn AUTHOR J. M. Bergot and Robert Israel, Dec 03 2020 STATUS approved

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Last modified September 20 16:50 EDT 2021. Contains 347586 sequences. (Running on oeis4.)