Triangle read by rows: a(n,m)=(2*n-1)*(n-m)*(n+m+1)/2, where n is the column and m the row index.

Terms

a(0) =1a(1) =3a(2) =-2a(3) =6a(4) =-5a(5) =-9a(6) =10a(7) =-9a(8) =-21a(9) =-20a(10) =15a(11) =-14a(12) =-36a(13) =-45a(14) =-35a(15) =21a(16) =-20a(17) =-54a(18) =-75a(19) =-77a(20) =-54a(21) =28a(22) =-27a(23) =-75a(24) =-110a(25) =-126a(26) =-117a(27) =-77a(28) =36a(29) =-35