311168

Appears in sequences

• First numerator and then denominator of the central elements of the 1/3-Pascal triangle (by row).at n=20A046543
• First denominator and then numerator of the central elements of the 1/3-Pascal triangle (by row).at n=21A046544
• Distinct numbers in writing first numerator and then denominator of the central elements of the 1/3-Pascal triangle (by row).at n=10A046545
• a(n) = C(n)*(7*n + 1) where C(n) = Catalan numbers (A000108).at n=9A050477
• Number of sequences {s(i): i=0..n} such that |s(i)-s(i-1)|=1, i=1..n and s(i)=0 at four values of i, one of which is i=0.at n=20A052207
• Number of unicursal planar maps with n edges rooted at a vertex of odd valency (unicursal means that exactly two vertices are of odd valency; there is an Eulerian path).at n=7A069731
• Tenth column (m=9) of (1,6)-Pascal triangle A096956.at n=10A097300
• Row sums of triangle A132819.at n=9A132820
• Minimal covering numbers.at n=61A160559
• Sixth partial sums of cubes (A000578).at n=10A254469