Triangle read by rows. A generalization of unsigned Lah numbers, called L[3,2].

Terms

a(0) =1a(1) =4a(2) =1a(3) =28a(4) =14a(5) =1a(6) =280a(7) =210a(8) =30a(9) =1a(10) =3640a(11) =3640a(12) =780a(13) =52a(14) =1a(15) =58240a(16) =72800a(17) =20800a(18) =2080a(19) =80a(20) =1a(21) =1106560a(22) =1659840a(23) =592800a(24) =79040a(25) =4560a(26) =114a(27) =1a(28) =24344320a(29) =42602560