Sequence shifts left six places under Weigh transform with a(n) = signum(n) for n<6.

Terms

a(0) =0a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =1a(9) =2a(10) =2a(11) =3a(12) =4a(13) =5a(14) =6a(15) =9a(16) =12a(17) =16a(18) =23a(19) =31a(20) =43a(21) =61a(22) =85a(23) =118a(24) =168a(25) =236a(26) =333a(27) =475a(28) =674a(29) =958