Triangle T(n,k), 0<=k<=n, read by rows given by [ -1,1,-1,1,-1,1,-1,1,-1,1,...] DELTA [1,-1,1,-1,1,-1,1,-1,1,-1,...] where DELTA is the operator defined in A084938.
A123254
Triangle T(n,k), 0<=k<=n, read by rows given by [ -1,1,-1,1,-1,1,-1,1,-1,1,...] DELTA [1,-1,1,-1,1,-1,1,-1,1,-1,...] where DELTA is the operator defined in A084938.
Terms
- a(0) =1a(1) =-1a(2) =1a(3) =0a(4) =0a(5) =0a(6) =1a(7) =-3a(8) =3a(9) =-1a(10) =0a(11) =0a(12) =0a(13) =0a(14) =0a(15) =-2a(16) =10a(17) =-20a(18) =20a(19) =-10a(20) =2a(21) =0a(22) =0a(23) =0a(24) =0a(25) =0a(26) =0a(27) =0a(28) =5a(29) =-35
External references
- oeis: A123254