a(n) = floor(5*n/4), numbers that are congruent to {0, 1, 2, 3} mod 5.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =5a(5) =6a(6) =7a(7) =8a(8) =10a(9) =11a(10) =12a(11) =13a(12) =15a(13) =16a(14) =17a(15) =18a(16) =20a(17) =21a(18) =22a(19) =23a(20) =25a(21) =26a(22) =27a(23) =28a(24) =30a(25) =31a(26) =32a(27) =33a(28) =35a(29) =36