Greatest integer whose square root is less than or equal to Sum_{j=0..n} sqrt(j).

Terms

a(0) =0a(1) =1a(2) =5a(3) =17a(4) =37a(5) =70a(6) =117a(7) =181a(8) =265a(9) =372a(10) =504a(11) =664a(12) =855a(13) =1079a(14) =1339a(15) =1637a(16) =1977a(17) =2361a(18) =2791a(19) =3271a(20) =3802a(21) =4388a(22) =5032a(23) =5735a(24) =6501a(25) =7333a(26) =8232a(27) =9202a(28) =10245a(29) =11364