Palindromic Super-7 Numbers.

Terms

a(0) =582515285a(1) =685545586a(2) =19855655891a(3) =21181418112a(4) =26725652762a(5) =73059995037a(6) =154829928451a(7) =234340043432a(8) =289421124982a(9) =384193391483a(10) =405355553504a(11) =800627726008a(12) =868737737868