581196

Appears in sequences

• Number of 3 X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 1 1 vertically.at n=14A207683
• a(n) = 8*binomial(5*n + 8, n)/(5*n + 8).at n=6A233736
• Triangle read by rows: number of idempotents of rank k in partition monoid P_n.at n=51A256040