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A046373 Numbers of the form p*q*r where p,q,r are (not necessarily distinct) odd palindromic primes (odd terms from A002385). 2

%I #16 Oct 10 2019 22:48:16

%S 27,45,63,75,99,105,125,147,165,175,231,245,275,343,363,385,539,605,

%T 847,909,1179,1331,1359,1515,1629,1719,1965,2121,2265,2525,2715,2751,

%U 2817,2865,3171,3177,3275,3333,3357,3447,3535,3775,3801,4011,4323,4525

%N Numbers of the form p*q*r where p,q,r are (not necessarily distinct) odd palindromic primes (odd terms from A002385).

%t Take[Times@@@Tuples[Select[Prime[Range[2,100]],PalindromeQ],3]//Union,50] (* _Harvey P. Dale_, Sep 10 2019 *)

%Y Cf. A002385, A046316, A046405.

%K nonn,base

%O 1,1

%A _Patrick De Geest_, Jun 15 1998

%E Definition clarified by _N. J. A. Sloane_, Dec 19 2017 at the suggestion of _Harvey P. Dale_

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Last modified April 18 15:05 EDT 2024. Contains 371780 sequences. (Running on oeis4.)