Third differences of eighth powers (A001016).

Terms

a(0) =1a(1) =253a(2) =5796a(3) =46620a(4) =213444a(5) =697788a(6) =1832292a(7) =4131036a(8) =8329860a(9) =15426684a(10) =26721828a(11) =43858332a(12) =68862276a(13) =104183100a(14) =152733924a(15) =217931868a(16) =303738372a(17) =414699516a(18) =555986340a(19) =733435164a(20) =953587908a(21) =1223732412a(22) =1551942756a(23) =1947119580a(24) =2419030404a(25) =2978349948