887753

Appears in sequences

• Number of (1+1) X (n+1) arrays of permutations of 0..n*2+1 with each element having directed index change 0,1 0,-2 1,0 or -1,0.at n=21A264300
• The number of nonnegative integers that have a shortest divisor addition chain of length n.at n=25A352079