a(n) = A376992(n) - 10^(n-1).

Terms

a(0) =4a(1) =3a(2) =13a(3) =13a(4) =513a(5) =801a(6) =6781a(7) =30721a(8) =40513a(9) =1057513a(10) =515313a(11) =16728501a(12) =78402181a(13) =13617661a(14) =472012281a(15) =64846161a(16) =5481873013a(17) =2459693601a(18) =116852093013a(19) =62611784481