32966

Appears in sequences

• Expansion of -x*(1+x-x^2+x^3+4*x^4) / ( (x^3-2*x^2-x+1)*(x^3+2*x^2-x-1) ).at n=18A120391
• Expansion of c(5x^2)/(1-x*c(5x^2)), where c(x) is the g.f. of A000108.at n=9A128387
• Number of n-ary words beginning with the first character of the alphabet, that can be built by inserting five doublets into the initially empty word.at n=6A194717
• Number of 6-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=5A194726