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

Terms

a(0) =5a(1) =0a(2) =1a(3) =-3a(4) =7a(5) =-15a(6) =31a(7) =-63a(8) =126a(9) =-245a(10) =455a(11) =-791a(12) =1253a(13) =-1715a(14) =1715a(15) =0a(16) =-6419a(17) =24157a(18) =-67081a(19) =162925a(20) =-364609a(21) =767977a(22) =-1535953a(23) =2922679a(24) =-5273325a(25) =8931521a(26) =-13886641a(27) =18775981a(28) =-18399241a(29) =-2035799