a(0) = 0, a(1) = 1; otherwise, a(n) = a(n-1) + a(m), where m is the greatest square < n.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =8a(6) =12a(7) =16a(8) =20a(9) =24a(10) =48a(11) =72a(12) =96a(13) =120a(14) =144a(15) =168a(16) =192a(17) =384a(18) =576a(19) =768a(20) =960a(21) =1152a(22) =1344a(23) =1536a(24) =1728a(25) =1920a(26) =3840a(27) =5760a(28) =7680a(29) =9600