Eigentriangle, row sums = n!

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =1a(5) =2a(6) =13a(7) =3a(8) =2a(9) =6a(10) =71a(11) =13a(12) =6a(13) =6a(14) =24a(15) =461a(16) =71a(17) =26a(18) =18a(19) =24a(20) =120a(21) =3447a(22) =461a(23) =142a(24) =78a(25) =72a(26) =120a(27) =720a(28) =29093a(29) =3447