a(n) = abs(floor(n + a(n-1)^2/n - n*log(n))) with a(0)=1.

Terms

a(0) =1a(1) =2a(2) =2a(3) =1a(4) =2a(5) =3a(6) =4a(7) =5a(8) =6a(9) =7a(10) =9a(11) =9a(12) =12a(13) =10a(14) =16a(15) =9a(16) =24a(17) =2a(18) =34a(19) =23a(20) =14a(21) =34a(22) =6a(23) =48a(24) =43a(25) =18a(26) =47a(27) =19a(28) =53a(29) =28