Values B(n) associated with the stationary terms listed in A135025.

Terms

a(0) =7a(1) =26a(2) =81a(3) =270a(4) =841a(5) =2480a(6) =7479a(7) =22404a(8) =66535a(9) =197470a(10) =592419a(11) =1772034a(12) =5317217a(13) =15955046a(14) =47860367a(15) =143540614a(16) =430579631a(17) =1291494336a(18) =3874347869a(19) =11622575710a(20) =34869569547a(21) =104608356834a(22) =313820413899a(23) =941454837836