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

Terms

a(0) =1a(1) =0a(2) =1a(3) =-3a(4) =6a(5) =-9a(6) =9a(7) =0a(8) =-27a(9) =81a(10) =-162a(11) =243a(12) =-243a(13) =1a(14) =714a(15) =-2067a(16) =3695a(17) =-3519a(18) =-4896a(19) =37621a(20) =-129999a(21) =352716a(22) =-836111a(23) =1802901a(24) =-3605802a(25) =6760781a(26) =-11961081a(27) =20058301a(28) =-32017846a(29) =48916881