First term of n-th difference sequence of (floor(k*r)), r = sqrt(1/2), k >= 0.

Terms

a(0) =0a(1) =1a(2) =-1a(3) =0a(4) =3a(5) =-9a(6) =18a(7) =-27a(8) =27a(9) =1a(10) =-92a(11) =309a(12) =-771a(13) =1716a(14) =-3627a(15) =7449a(16) =-14897a(17) =28764a(18) =-52921a(19) =91239a(20) =-143718a(21) =196197a(22) =-196197a(23) =0a(24) =737817a(25) =-2785484a(26) =7758154a(27) =-18894735a(28) =42409968a(29) =-89718894