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

Terms

a(0) =3a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =1a(8) =-8a(9) =36a(10) =-120a(11) =330a(12) =-792a(13) =1716a(14) =-3431a(15) =6420a(16) =-11320a(17) =18768a(18) =-28764a(19) =38760a(20) =-38760a(21) =1a(22) =149204a(23) =-571780a(24) =1613128a(25) =-3964050a(26) =8934120a(27) =-18874260a(28) =37748521a(29) =-71705864