Number of objects generated by the Combstruct grammar defined in the Maple program. See the link for the grammar specification.
A052815
Number of objects generated by the Combstruct grammar defined in the Maple program. See the link for the grammar specification.
Terms
- a(0) =0a(1) =1a(2) =2a(3) =5a(4) =16a(5) =56a(6) =221a(7) =900a(8) =3839a(9) =16752a(10) =74701a(11) =338327a(12) =1553181a(13) =7208191a(14) =33768389a(15) =159463655a(16) =758291989a(17) =3627890869a(18) =17450572584a(19) =84342086908a(20) =409394388458
External references
- oeis: A052815