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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.
1
24, 24, 28, 30, 54, 72, 32, 24, 48, 72, 30, 216, 54, 64, 72, 126, 162, 60, 90, 168, 504, 84, 63, 84, 504, 70, 270, 168, 54, 96, 252, 288, 96, 168, 343, 784, 96, 216, 405, 96, 324, 108, 48, 1260, 160, 144, 192, 1134, 243, 252, 1080, 72, 192, 144, 486, 81, 48
OFFSET
1,1
COMMENTS
a(n) = A001414(A099542(n)). - Reinhard Zumkeller, Dec 01 2012
LINKS
Eric Weisstein's World of Mathematics, Rhonda Number
EXAMPLE
The first term in A099542 is 1568. The sum of its prime factors is 24.
MATHEMATICA
rnQ[n_]:=Times@@IntegerDigits[n]==10Total[Times@@@FactorInteger[n]]; Times@@IntegerDigits[#]/10&/@ Select[Range[350000], rnQ] (* Harvey P. Dale, Mar 13 2011 *)
PROG
(Haskell)
a099543 = a001414 . a099542 -- Reinhard Zumkeller, Dec 01 2012
CROSSREFS
Cf. A099542.
Sequence in context: A217140 A235249 A115028 * A188311 A185497 A186939
KEYWORD
nonn,base
AUTHOR
Mark Hudson (mrmarkhudson(AT)hotmail.com), Oct 21 2004
EXTENSIONS
More terms from Harvey P. Dale, Mar 13 2011.
STATUS
approved