100296

Appears in sequences

• T(2n+5,n), array T as in A055216.at n=8A055221
• Column 3 of triangle A055898.at n=15A055899
• Number of length n+1 0..2 arrays with at most two downsteps in every n consecutive neighbor pairs.at n=11A255623
• Triangle read by rows: T(n,k) = 2*n+1 for k = 0 and otherwise T(n,k) = Sum_{i=n-k..n, j=0..i-n+k, i<>n or j<>k} T(i,j).at n=44A335436