Conjectured row or column n=4 of array A205497.

Terms

a(0) =1a(1) =26a(2) =334a(3) =2951a(4) =20641a(5) =123216a(6) =656683a(7) =3217526a(8) =14786816a(9) =64657546a(10) =271838823a(11) =1107586989a(12) =4399926007a(13) =17122243560a(14) =65514790830a(15) =247212893755a(16) =922136438698