Number of length-n binary words having no subwords that are abelian fourth powers.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =14a(5) =26a(6) =48a(7) =88a(8) =146a(9) =236a(10) =394a(11) =674a(12) =1060a(13) =1640a(14) =2536a(15) =4086a(16) =6470a(17) =10292a(18) =16374a(19) =25720a(20) =39332a(21) =60154a(22) =92486a(23) =144218a(24) =217772a(25) =327898a(26) =494384a(27) =745096a(28) =1089186a(29) =1587432