Triangle read by rows: T(n, k) = A358125(n,k)*binomial(n-1, k), 0 <= k <= n-1.

Terms

a(0) =0a(1) =1a(2) =1a(3) =3a(4) =8a(5) =3a(6) =7a(7) =30a(8) =30a(9) =7a(10) =15a(11) =88a(12) =144a(13) =88a(14) =15a(15) =31a(16) =230a(17) =520a(18) =520a(19) =230a(20) =31a(21) =63a(22) =564a(23) =1620a(24) =2240a(25) =1620a(26) =564a(27) =63a(28) =127a(29) =1330