Lexicographically earliest increasing sequence of nonnegative numbers that contains no arithmetic progression of length 7.

A020657

Lexicographically earliest increasing sequence of nonnegative numbers that contains no arithmetic progression of length 7.

Terms

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

External references