10466643805
domain: N
Appears in sequences
- Expansion of c(6*x^2)/(1-x*c(6*x^2)), where c(x) is the g.f. of A000108.at n=17A132373
- Number of n-ary words beginning with the first character of the alphabet, that can be built by inserting nine doublets into the initially empty word.at n=7A194721
- Number of 7-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=9A194727