Unsigned member s=2 of a family of generalizations of the (signed) Lah triangle A008297. All numbers divided by 2.

A136657

Unsigned member s=2 of a family of generalizations of the (signed) Lah triangle A008297. All numbers divided by 2.

Terms

    a(0) =1a(1) =3a(2) =2a(3) =12a(4) =18a(5) =4a(6) =60a(7) =150a(8) =72a(9) =8a(10) =360a(11) =1320a(12) =1020a(13) =240a(14) =16a(15) =2520a(16) =12600a(17) =13860a(18) =5160a(19) =720a(20) =32a(21) =20160a(22) =131040a(23) =191520a(24) =99960a(25) =21840a(26) =2016a(27) =64a(28) =181440a(29) =1481760

External references