(tau<=)_6(n).

Terms

a(0) =1a(1) =7a(2) =13a(3) =34a(4) =40a(5) =76a(6) =82a(7) =138a(8) =159a(9) =195a(10) =201a(11) =327a(12) =333a(13) =369a(14) =405a(15) =531a(16) =537a(17) =663a(18) =669a(19) =795a(20) =831a(21) =867a(22) =873a(23) =1209a(24) =1230a(25) =1266a(26) =1322a(27) =1448a(28) =1454a(29) =1670