Lengths of the B blocks in analysis of A090822.

Terms

a(0) =1a(1) =3a(2) =9a(3) =19a(4) =47a(5) =98a(6) =220a(7) =441a(8) =885a(9) =1771a(10) =3551a(11) =7106a(12) =14279a(13) =28559a(14) =57121a(15) =114243a(16) =228495a(17) =456994a(18) =914012a(19) =1828025a(20) =3656053a(21) =7312107a(22) =14624223a(23) =29248450a(24) =58497096a(25) =116994195a(26) =233988391a(27) =467976791a(28) =935953586a(29) =1871907196