337390073

Appears in sequences

• a(n) = ((2n-1)^(2n+1) + (2n+1)^(2n-1))/(2n)^2 = A154682(n)/(2n)^2 for n > 0.at n=4A233446
• a(n) = ((n-1)^(n+1) + (-1)^n*(n+1)^(n-1))/(n^2).at n=9A234252