First column of array associated with lexicographically justified array.

Terms

a(0) =1a(1) =4a(2) =7a(3) =9a(4) =12a(5) =14a(6) =17a(7) =20a(8) =22a(9) =25a(10) =27a(11) =30a(12) =33a(13) =35a(14) =38a(15) =41a(16) =43a(17) =46a(18) =48a(19) =51a(20) =54a(21) =56a(22) =59a(23) =62a(24) =64a(25) =67a(26) =69a(27) =72a(28) =75a(29) =77