A Beatty sequence: a(n) = floor(n*sqrt(2)).

Terms

a(0) =0a(1) =1a(2) =2a(3) =4a(4) =5a(5) =7a(6) =8a(7) =9a(8) =11a(9) =12a(10) =14a(11) =15a(12) =16a(13) =18a(14) =19a(15) =21a(16) =22a(17) =24a(18) =25a(19) =26a(20) =28a(21) =29a(22) =31a(23) =32a(24) =33a(25) =35a(26) =36a(27) =38a(28) =39a(29) =41