91310

Appears in sequences

• Number of (n+1) X (3+1) 0..1 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.at n=24A250724
• Numbers k such that phi(k, 2) = phi(k+1, 2), where phi(k, 2) = A002472(k).at n=18A301868