Shifts 7 places left under Euler transform with a(0)=0 and a(n)=1 for n<7.

Terms

a(0) =0a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =1a(9) =2a(10) =3a(11) =5a(12) =7a(13) =11a(14) =15a(15) =22a(16) =31a(17) =45a(18) =64a(19) =94a(20) =136a(21) =200a(22) =294a(23) =435a(24) =643a(25) =956a(26) =1420a(27) =2117a(28) =3157a(29) =4721