Row sums of factorial-Pascal matrix A162747.

Terms

a(0) =1a(1) =2a(2) =5a(3) =14a(4) =42a(5) =132a(6) =430a(7) =1444a(8) =4984a(9) =17648a(10) =64024a(11) =237712a(12) =902416a(13) =3499680a(14) =13853424a(15) =55931168a(16) =230142848a(17) =964460288a(18) =4113656704a(19) =17846729984a(20) =78708574976a(21) =352678567424