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A046370 Numbers with exactly 4 palindromic prime factors (counted with multiplicity). 1

%I

%S 16,24,36,40,54,56,60,81,84,88,90,100,126,132,135,140,150,189,196,198,

%T 210,220,225,250,294,297,308,315,330,350,375,441,462,484,490,495,525,

%U 550,625,686,693,726,735,770,808,825,875,1029,1048,1078,1089,1155,1208

%N Numbers with exactly 4 palindromic prime factors (counted with multiplicity).

%Y Cf. A014613, A046402.

%K nonn,base

%O 0,1

%A _Patrick De Geest_, Jun 15 1998.

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Last modified December 13 22:07 EST 2018. Contains 318087 sequences. (Running on oeis4.)