Triangle read by rows: n-th row gives expansion of the series for HarmonicNumber(n, -r).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =2a(6) =0a(7) =6a(8) =12a(9) =6a(10) =-4a(11) =0a(12) =40a(13) =60a(14) =24a(15) =0a(16) =-60a(17) =0a(18) =300a(19) =360a(20) =120a(21) =120a(22) =0a(23) =-840a(24) =0a(25) =2520a(26) =2520a(27) =720a(28) =0a(29) =3360