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 A046355 Composite numbers with only palindromic prime factors whose sum is palindromic (counted with multiplicity). 5
 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 24, 27, 28, 40, 45, 48, 54, 121, 308, 440, 495, 528, 594, 735, 784, 875, 882, 1050, 1120, 1250, 1260, 1331, 1344, 1500, 1512, 1600, 1701, 1800, 1920, 2025, 2048, 2101, 2121, 2160, 2304, 2430, 2525, 2592, 2751, 2916, 3030 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Subsequence of the numbers k in A046349 such that A262049(k) is in A002113. - R. J. Mathar, Sep 09 2015 LINKS Giovanni Resta, Table of n, a(n) for n = 1..10000 EXAMPLE 3030 = 2 * 3 * 5 * 101 -> 2 + 3 + 5 + 101 = 111 and 111 is a palindrome. MAPLE isA046355 := proc(n)     local sofpp ;     if isA046349(n) then         sofpp := A262049(n) ;         isA002113(sofpp) ;     else         false;     end if; end proc: for n from 2 to 400 do     if isA046355(n) then         printf("%d, ", n);     end if; end do: # R. J. Mathar, Sep 09 2015 MATHEMATICA palQ[n_] := Reverse[x=IntegerDigits[n]] == x; Select[Range[4, 3100], !PrimeQ[#] && And@@palQ/@Join[{Total[Times@@@(x=FactorInteger[#])]}, First/@x]&] (* Jayanta Basu, Jun 05 2013 *) CROSSREFS Cf. A046356, A046357. Sequence in context: A070807 A246282 A046352 * A335419 A163122 A329149 Adjacent sequences:  A046352 A046353 A046354 * A046356 A046357 A046358 KEYWORD nonn,base AUTHOR Patrick De Geest, Jun 15 1998 STATUS approved

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Last modified July 2 03:47 EDT 2022. Contains 354985 sequences. (Running on oeis4.)