2751280

Appears in sequences

• a(n) is the square of the side length of a simplex whose n-dimensional inner hypervolume is equal to its (n-1)-dimensional surface hypervolume. As a result, the sequence starts at n=2.at n=32A364922
• a(n) = Sum_{k=0..n} (-1)^k * binomial(4*n-k+4,n-k).at n=7A390592