Sequence shifts left ten places under Weigh transform with a(n) = signum(n) for n<10.

Terms

a(0) =0a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =1a(9) =1a(10) =1a(11) =1a(12) =1a(13) =2a(14) =2a(15) =3a(16) =4a(17) =5a(18) =6a(19) =8a(20) =10a(21) =12a(22) =15a(23) =19a(24) =24a(25) =31a(26) =40a(27) =51a(28) =67a(29) =87