203696

Appears in sequences

• Walks of length n on the x-axis using steps {1,-1} and visiting no point more than twice.at n=33A212585
• Number of 2 X n 0..2 arrays with no element having a strict majority of its horizontal and antidiagonal neighbors equal to itself plus one mod 3, with upper left element zero (rock paper and scissors drawn positions).at n=8A231856