8960878

Appears in sequences

• Generalized central coefficients for k=3.at n=11A121725
• Number of n-ary words beginning with the first character of the alphabet, that can be built by inserting six doublets into the initially empty word.at n=10A194718
• Number of 10-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=6A194730