Critical values in Conway's game of one-dimensional phutball.

Terms

a(0) =1a(1) =3a(2) =4a(3) =7a(4) =9a(5) =10a(6) =11a(7) =15a(8) =16a(9) =19a(10) =21a(11) =23a(12) =24a(13) =25a(14) =26a(15) =31a(16) =33a(17) =34a(18) =35a(19) =39a(20) =40a(21) =43a(22) =44a(23) =47a(24) =49a(25) =51a(26) =53a(27) =54a(28) =55a(29) =56