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A046356 Odd numbers with only palindromic prime factors whose sum is palindromic (counted with multiplicity). 2
9, 15, 27, 45, 121, 495, 735, 875, 1331, 1701, 2025, 2101, 2121, 2525, 2751, 3171, 3275, 3775, 3801, 4525, 5445, 6573, 7413, 7825, 7833, 8043, 8085, 8595, 8767, 8825, 9325, 9575, 9625, 10201, 12005, 13231, 14641, 15251, 15267, 15897, 16527, 17161 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..41.

EXAMPLE

8767 = 11 * 797 -> 11 + 797 = 808 and 808 is a palindrome.

MATHEMATICA

palQ[n_] := Reverse[x=IntegerDigits[n]] == x; Select[Range[9, 17170, 2], !PrimeQ[#] && And@@palQ/@Join[{Total[Times@@@(x=FactorInteger[#])]}, First/@x]&] (* Jayanta Basu, Jun 05 2013 *)

CROSSREFS

Cf. A046355, A046357.

Sequence in context: A164385 A258813 A046353 * A248381 A060874 A147511

Adjacent sequences:  A046353 A046354 A046355 * A046357 A046358 A046359

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Jun 15 1998.

STATUS

approved

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Last modified July 17 01:41 EDT 2018. Contains 312693 sequences. (Running on oeis4.)