109246

Appears in sequences

• Number of primitive (aperiodic) word structures of length n using a 6-ary alphabet.at n=9A056277
• Number of primitive (aperiodic) palindromic structures using a maximum of six different symbols.at n=20A056480
• Number of lattice paths from (0,0) to (n,n) using steps S={(k,0),(0,k),(1,1)|0<k<=2} which never go above the line y=x.at n=7A175895