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

Terms

a(0) =-2a(1) =1a(2) =-2a(3) =4a(4) =-8a(5) =16a(6) =-31a(7) =56a(8) =-91a(9) =126a(10) =-126a(11) =1a(12) =449a(13) =-1624a(14) =4249a(15) =-9499a(16) =18998a(17) =-34356a(18) =55453a(19) =-75734a(20) =70889a(21) =26334a(22) =-379050a(23) =1352079a(24) =-3713651a(25) =9000226a(26) =-20136807a(27) =42409969a(28) =-84819938a(29) =161567266