Pierce expansion of 1/e^2.

Terms

a(0) =7a(1) =18a(2) =19a(3) =136a(4) =349a(5) =357a(6) =1354a(7) =6996a(8) =7135a(9) =9531a(10) =11558a(11) =15996a(12) =17432a(13) =52118a(14) =151048a(15) =427802a(16) =821834a(17) =877819a(18) =972918a(19) =1046690a(20) =1540789a(21) =3653077a(22) =8200738a(23) =9628573a(24) =164153335a(25) =5607624822a(26) =86457467082a(27) =141885251873a(28) =151882622551