Displacement under constant discrete unit surge.

Terms

a(0) =0a(1) =1a(2) =11a(3) =53a(4) =173a(5) =448a(6) =994a(7) =1974a(8) =3606a(9) =6171a(10) =10021a(11) =15587a(12) =23387a(13) =34034a(14) =48244a(15) =66844a(16) =90780a(17) =121125a(18) =159087a(19) =206017a(20) =263417a(21) =332948a(22) =416438a(23) =515890a(24) =633490a(25) =771615a(26) =932841a(27) =1119951a(28) =1335943a(29) =1584038