a(8i+j) = 13i + a(j), where 1<=j<=8.

Terms

a(0) =1a(1) =3a(2) =4a(3) =6a(4) =8a(5) =9a(6) =11a(7) =12a(8) =14a(9) =16a(10) =17a(11) =19a(12) =21a(13) =22a(14) =24a(15) =25a(16) =27a(17) =29a(18) =30a(19) =32a(20) =34a(21) =35a(22) =37a(23) =38a(24) =40a(25) =42a(26) =43a(27) =45a(28) =47a(29) =48