Triangle read by rows: T(n, k) = Sum_{j=0..n} C(-j-1, -n-1)*L(j, k), L the unsigned Lah numbers A271703, for n >= 0 and 0 <= k <= n.
A271706
Triangle read by rows: T(n, k) = Sum_{j=0..n} C(-j-1, -n-1)*L(j, k), L the unsigned Lah numbers A271703, for n >= 0 and 0 <= k <= n.
Terms
- a(0) =1a(1) =-1a(2) =1a(3) =1a(4) =0a(5) =1a(6) =-1a(7) =3a(8) =3a(9) =1a(10) =1a(11) =8a(12) =18a(13) =8a(14) =1a(15) =-1a(16) =45a(17) =110a(18) =70a(19) =15a(20) =1a(21) =1a(22) =264a(23) =795a(24) =640a(25) =195a(26) =24a(27) =1a(28) =-1a(29) =1855
External references
- oeis: A271706