29324405

Appears in sequences

• Number of different lattice paths running from (0,0) to (n,0) using steps from S = {(k,k) or (k,-k): k positive integer} that never go below the x-axis.at n=10A059231
• Series reversion of x/(1+5x+4x^2).at n=10A127846
• Number of lattice paths from {10}^n to {0}^n using steps that decrement one component such that for each point (p_1,p_2,...,p_n) we have p_1<=p_2<=...<=p_n.at n=2A227607