Pseudo Q-numbers.

Terms

a(0) =0a(1) =1a(2) =1a(3) =1a(4) =3a(5) =7a(6) =9a(7) =4a(8) =5a(9) =10a(10) =16a(11) =17a(12) =11a(13) =5a(14) =12a(15) =20a(16) =23a(17) =17a(18) =9a(19) =20a(20) =18a(21) =13a(22) =14a(23) =33a(24) =43a(25) =31a(26) =28a(27) =27a(28) =2a(29) =29