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A046365 Composite palindromes whose sum of prime factors is prime (counted with multiplicity). 2
6, 22, 88, 99, 202, 252, 333, 414, 424, 454, 464, 595, 686, 747, 777, 808, 838, 848, 858, 909, 1001, 1551, 1771, 2442, 3553, 4114, 5335, 5775, 6336, 6996, 8008, 8228, 9009, 9559, 9669, 9889, 12121, 14241, 16261, 16761, 17171, 18081, 18381, 20102 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..44.

FORMULA

A046363 INTERSECT A002113. - R. J. Mathar, Sep 09 2015

MATHEMATICA

Select[Range[20125], !PrimeQ[#] && Reverse[x=IntegerDigits[#]] == x && PrimeQ[Total[Times@@@FactorInteger[#]]]&] (* Jayanta Basu, May 29 2013 *)

CROSSREFS

Cf. A046363, A046364.

Sequence in context: A255461 A003699 A047124 * A266184 A255465 A289603

Adjacent sequences:  A046362 A046363 A046364 * A046366 A046367 A046368

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, Jun 15 1998.

STATUS

approved

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Last modified August 19 13:00 EDT 2017. Contains 290807 sequences.