90634

Appears in sequences

• Number of length n+3 0..n arrays with no four elements in a row with pattern abba (possibly a=b) and new values 0..n introduced in 0..n order.at n=6A243026
• Number of length n+3 0..7 arrays with no four elements in a row with pattern abba (possibly a=b) and new values 0..7 introduced in 0..7 order.at n=6A243032