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 A046352 Composite numbers whose sum of prime factors is palindromic (counted with multiplicity). 3
 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 24, 27, 28, 40, 45, 48, 54, 57, 62, 85, 102, 106, 116, 121, 123, 182, 194, 218, 259, 260, 278, 292, 298, 305, 308, 312, 351, 358, 366, 370, 388, 403, 413, 415, 428, 440, 444, 483, 495, 498, 508, 528, 548, 568, 575, 590 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS R. J. Mathar, Table of n, a(n) for n = 1..2014 EXAMPLE 116 = 2 * 2 * 29 -> 2 + 2 + 29 = 33 and 33 is a palindrome. MAPLE n := 1 ; for i from 2 to 30000 do     if not isprime(i) then         sof := A001414(i) ;         if isA002113(sof) then             printf("%d %d\n", n, i) ;             n := n+1 ;         end if;     end if; end do: # R. J. Mathar, Sep 09 2015 MATHEMATICA palQ[n_]:=Reverse[x=IntegerDigits[n]]==x; Select[Range[4, 590], !PrimeQ[#]&&palQ[Total[Times@@@FactorInteger[#]]]&] (* Jayanta Basu, Jun 05 2013 *) CROSSREFS Cf. A046353, A046354. Sequence in context: A199009 A070807 A246282 * A046355 A163122 A202259 Adjacent sequences:  A046349 A046350 A046351 * A046353 A046354 A046355 KEYWORD nonn,base,changed AUTHOR Patrick De Geest, Jun 15 1998 STATUS approved

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Last modified October 23 10:07 EDT 2019. Contains 328345 sequences. (Running on oeis4.)