Odd numbers with exactly 4 distinct palindromic prime factors.

Terms

a(0) =1155a(1) =10605a(2) =13755a(3) =15855a(4) =16665a(5) =19005a(6) =20055a(7) =21615a(8) =23331a(9) =24915a(10) =29865a(11) =30261a(12) =31515a(13) =32865a(14) =34881a(15) =37065a(16) =38885a(17) =39165a(18) =40215a(19) =41811a(20) =44121a(21) =50435a(22) =51645a(23) =58135a(24) =58245a(25) =61545a(26) =63195a(27) =69685a(28) =72303a(29) =73535