Successive approximations up to 3^n for the 3-adic integer Sum_{k>=0} k!.

Terms

a(0) =0a(1) =1a(2) =1a(3) =10a(4) =64a(5) =145a(6) =145a(7) =874a(8) =3061a(9) =3061a(10) =42427a(11) =42427a(12) =396721a(13) =928162a(14) =4116808a(15) =4116808a(16) =4116808a(17) =4116808a(18) =262397134a(19) =1037238112a(20) =1037238112a(21) =8010806914a(22) =8010806914a(23) =8010806914a(24) =196297164568a(25) =478726701049