Number of elements in Z[ i ] whose 'smallest algorithm' is <= n.

Terms

a(0) =1a(1) =5a(2) =17a(3) =49a(4) =125a(5) =297a(6) =669a(7) =1457a(8) =3093a(9) =6457a(10) =13309a(11) =27201a(12) =55237a(13) =111689a(14) =225101a(15) =452689a(16) =908885a(17) =1822809a(18) =3652701a(19) =7315553a(20) =14645349a(21) =29311081a(22) =58650733a(23) =117342321a(24) =234741877a(25) =469565561a(26) =939245693a(27) =1878655105a(28) =3757539461a(29) =7515406473