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

Terms

a(0) =0a(1) =0a(2) =1a(3) =-3a(4) =6a(5) =-9a(6) =9a(7) =0a(8) =-27a(9) =81a(10) =-161a(11) =231a(12) =-165a(13) =-363a(14) =2079a(15) =-6435a(16) =16071a(17) =-35343a(18) =70686a(19) =-130339a(20) =222717a(21) =-352715a(22) =515944a(23) =-692967a(24) =849299a(25) =-950455a(26) =996435a(27) =-1042415a(28) =1042415a(29) =1