Naturally embedded ternary trees having no internal node of label greater than 1.
A233389
Naturally embedded ternary trees having no internal node of label greater than 1.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =11a(4) =46a(5) =209a(6) =1006a(7) =5053a(8) =26227a(9) =139726a(10) =760398a(11) =4211959a(12) =23681987a(13) =134869448a(14) =776657383a(15) =4516117107a(16) =26486641078a(17) =156532100029a(18) =931426814462
External references
- oeis: A233389