Palindromes which are the product of exactly 7 distinct primes.

Terms

a(0) =22444422a(1) =24266242a(2) =26588562a(3) =35888853a(4) =36399363a(5) =43777734a(6) =47199174a(7) =51066015a(8) =53588535a(9) =53888835a(10) =55233255a(11) =59911995a(12) =60066006a(13) =62588526a(14) =62700726a(15) =62888826a(16) =81699618a(17) =87788778a(18) =89433498a(19) =122434221a(20) =202040202