918624304
domain: N
Appears in sequences
- a(n) = 2^n - binomial(n, floor(n/2)).at n=30A045621
- a(n) = 4^n - binomial(2*n,n).at n=15A068551
- Number of n X 2 0..1 arrays with row sums equal and column sums unequal to adjacent columns.at n=29A202736
- Number of n-step random walks on a line starting from the origin and returning to it at least once.at n=30A307768