7171892

Appears in sequences

• First numerator and then denominator of the central elements of the 1/5-Pascal triangle (by row).at n=24A046610
• First denominator and then numerator of the central elements of the 1/5-Pascal triangle (by row).at n=25A046611
• Distinct numbers in writing first numerator and then denominator of the central elements of the 1/5-Pascal triangle (by row).at n=12A046612
• a(n) = C(n)*(11n+1) where C(n) = Catalan numbers (A000108).at n=11A050490
• a(0) = 0; a(n) = C(2*n-2,n-1)*(n^2-2*n+2)/n for n >= 1.at n=12A180266