Begins with (2, 5); avoids 3-term arithmetic progressions.

Terms

a(0) =2a(1) =5a(2) =6a(3) =9a(4) =11a(5) =14a(6) =15a(7) =18a(8) =29a(9) =32a(10) =33a(11) =36a(12) =38a(13) =41a(14) =42a(15) =45a(16) =83a(17) =86a(18) =87a(19) =90a(20) =92a(21) =95a(22) =96a(23) =99a(24) =110a(25) =113a(26) =114a(27) =117a(28) =119a(29) =122