Number of 6-ary rooted trees with n nodes and height at most 6.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =9a(6) =20a(7) =47a(8) =107a(9) =249a(10) =573a(11) =1319a(12) =3010a(13) =6859a(14) =15534a(15) =35095a(16) =78964a(17) =177209a(18) =396434a(19) =884767a(20) =1969496a(21) =4374573a(22) =9694994a(23) =21443195a(24) =47333594a(25) =104291391a(26) =229373393a(27) =503609582a(28) =1103877079a(29) =2415752264