Number of 5-ary words either empty or beginning with the first character of the alphabet, that can be built by inserting n doublets into the initially empty word.
A194725
Number of 5-ary words either empty or beginning with the first character of the alphabet, that can be built by inserting n doublets into the initially empty word.
Terms
- a(0) =1a(1) =1a(2) =9a(3) =97a(4) =1145a(5) =14289a(6) =185193a(7) =2467137a(8) =33563481a(9) =464221105a(10) =6507351113a(11) =92236247841
External references
- oeis: A194725