Triangle read by rows: T(n,k) = (n-1-k)*abs(s(n,n+1-k)), where s(n,k) are the signed Stirling numbers of the first kind and 1 <= k <= n.

A199220

Triangle read by rows: T(n,k) = (n-1-k)*abs(s(n,n+1-k)), where s(n,k) are the signed Stirling numbers of the first kind and 1 <= k <= n.

Terms

    a(0) =-1a(1) =0a(2) =-1a(3) =1a(4) =0a(5) =-2a(6) =2a(7) =6a(8) =0a(9) =-6a(10) =3a(11) =20a(12) =35a(13) =0a(14) =-24a(15) =4a(16) =45a(17) =170a(18) =225a(19) =0a(20) =-120a(21) =5a(22) =84a(23) =525a(24) =1470a(25) =1624a(26) =0a(27) =-720a(28) =6a(29) =140

External references