Sequence shifts left five places under Weigh transform with a(n) = signum(n) for n<5.

Terms

a(0) =0a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =2a(9) =2a(10) =3a(11) =4a(12) =5a(13) =7a(14) =10a(15) =14a(16) =20a(17) =28a(18) =40a(19) =58a(20) =84a(21) =121a(22) =176a(23) =257a(24) =376a(25) =552a(26) =812a(27) =1196a(28) =1767a(29) =2615