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A099543 Sums of the prime factors of the Rhonda numbers to base 10 (sequence A099542). The terms in this sequence are equal to (Product of digits of terms of A099542)/10, which is simply the definition of Rhonda numbers to base 10.

%I A099543 #21 Aug 29 2025 07:28:10
%S A099543 24,24,28,30,54,72,32,24,48,72,30,216,54,64,72,126,162,60,90,168,504,
%T A099543 84,63,84,504,70,270,168,54,96,252,288,96,168,343,784,96,216,405,96,
%U A099543 324,108,48,1260,160,144,192,1134,243,252,1080,72,192,144,486,81,48
%N A099543 Sums of the prime factors of the Rhonda numbers to base 10 (sequence A099542). The terms in this sequence are equal to (Product of digits of terms of A099542)/10, which is simply the definition of Rhonda numbers to base 10.
%H A099543 Reinhard Zumkeller, <a href="/A099543/b099543.txt">Table of n, a(n) for n = 1..1000</a>
%H A099543 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/RhondaNumber.html">Rhonda Number</a>
%F A099543 a(n) = A001414(A099542(n)). - _Reinhard Zumkeller_, Dec 01 2012
%e A099543 The first term in A099542 is 1568. The sum of its prime factors is 24.
%t A099543 rnQ[n_]:=Times@@IntegerDigits[n]==10Total[Times@@@FactorInteger[n]]; Times@@IntegerDigits[#]/10&/@ Select[Range[350000], rnQ]  (* _Harvey P. Dale_, Mar 13 2011 *)
%o A099543 (Haskell)
%o A099543 a099543 = a001414 . a099542  -- _Reinhard Zumkeller_, Dec 01 2012
%Y A099543 Cf. A001414, A099542.
%K A099543 nonn,base,changed
%O A099543 1,1
%A A099543 Mark Hudson (mrmarkhudson(AT)hotmail.com), Oct 21 2004
%E A099543 More terms from _Harvey P. Dale_, Mar 13 2011