82907640

Appears in sequences

• First numerator and then denominator of the central elements of the 1/5-Pascal triangle (by row).at n=30A046610
• First denominator and then numerator of the central elements of the 1/5-Pascal triangle (by row).at n=31A046611
• Distinct numbers in writing first numerator and then denominator of the central elements of the 1/5-Pascal triangle (by row).at n=15A046612
• a(n) = Sum_{i=0..floor(n/2)} T(i,n-i), array T as in A047072.at n=30A047074
• a(n) = (-1)^n*(2*n - 1)*CatalanNumber(n - 2) for n >= 2, a(n) = n for n = 0, 1.at n=16A078718