First term of n-th difference sequence of (floor(k*r)), r = sqrt(8), k >= 0.

Terms

a(0) =2a(1) =1a(2) =-1a(3) =1a(4) =-1a(5) =0a(6) =5a(7) =-20a(8) =55a(9) =-125a(10) =251a(11) =-462a(12) =803a(13) =-1364a(14) =2365a(15) =-4367a(16) =8735a(17) =-18564a(18) =40409a(19) =-87380a(20) =184603a(21) =-379049a(22) =758099a(23) =-1486674a(24) =2884775a(25) =-5592404a(26) =10919089a(27) =-21572459a(28) =43144919a(29) =-87087000