A115698 - OEIS

%I #2 Mar 30 2012 17:40:35

%S 4,6,9,21,22,33,46,51,55,65,77,82,94,121,202,203,253,262,303,393,407,

%T 427,445,446,451,485,505,559,583,626,667,669,671,687,707,789,803,849,

%U 869,889,939,1042,1111,1441,1622,1661,1991,2031,2123,2157,2173,2321

%N Semiprimes (A001358) whose digit reversal is the product of 2 palindromes greater than 1.

%e 669=3*223 is semiprime and 966=6*161.

%Y Cf. A001358, A115683.

%K nonn,base

%O 1,1

%A _Giovanni Resta_, Jan 31 2006