289510

Appears in sequences

• Number of blobs with 2n+1 edges.at n=8A003168
• Triangle enumerating certain two-line arrays of positive integers.at n=43A211788
• Triangle enumerating certain two-line arrays of positive integers.at n=44A211788
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where T(n,k) = (-1)^n * Sum_{j=0..n} (-2)^j * binomial(n,j) * binomial(k*n+j+1,n)/(k*n+j+1).at n=63A336573