33563481

Appears in sequences

• Generalized central binomial coefficients for k=2.at n=15A121724
• Number of n-ary words beginning with the first character of the alphabet, that can be built by inserting eight doublets into the initially empty word.at n=5A194720
• 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.at n=8A194725