Maximal intervals of balanced binary trees in the Tamari lattices.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =2a(6) =2a(7) =6a(8) =9a(9) =15a(10) =15a(11) =17a(12) =41a(13) =77a(14) =125a(15) =178a(16) =252a(17) =376a(18) =531a(19) =740a(20) =1192a(21) =2179a(22) =4273a(23) =7738a(24) =13012a(25) =20776a(26) =32389a(27) =49841a(28) =75457a(29) =113011