Width of polyominoes in A282389.

Terms

a(0) =3a(1) =5a(2) =8a(3) =14a(4) =27a(5) =53a(6) =104a(7) =206a(8) =410a(9) =818a(10) =1635a(11) =3269a(12) =6536a(13) =13070a(14) =26139a(15) =52277a(16) =104552a(17) =209102a(18) =418202a(19) =836402a(20) =1672803a(21) =3345605a(22) =6691209a(23) =13382417a(24) =26764832a(25) =53529662a(26) =107059322a(27) =214118642a(28) =428237283a(29) =856474565