Number of binary strings of length n avoiding 4-antipowers.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =16a(5) =32a(6) =64a(7) =128a(8) =232a(9) =432a(10) =808a(11) =1512a(12) =1644a(13) =2258a(14) =3228a(15) =5034a(16) =3648a(17) =4170a(18) =5166a(19) =6780a(20) =4484a(21) =5136a(22) =5874a(23) =7484a(24) =6520a(25) =8438a(26) =10858a(27) =13134a(28) =11396a(29) =13366