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

Terms

a(0) =1a(1) =0a(2) =1a(3) =-3a(4) =7a(5) =-15a(6) =30a(7) =-55a(8) =90a(9) =-125a(10) =125a(11) =0a(12) =-450a(13) =1625a(14) =-4250a(15) =9500a(16) =-18999a(17) =34357a(18) =-55454a(19) =75735a(20) =-70890a(21) =-26333a(22) =379049a(23) =-1352078a(24) =3713650a(25) =-9000225a(26) =20136806a(27) =-42409968a(28) =84819937a(29) =-161567265