45656

Appears in sequences

• Number of 3 X n matrices with 3*n/2 1's (if n is even) or (3*n+1)/2 1's (if n is odd) that do not have a horizontal nor vertical nor diagonal 3-streak of 1's.at n=21A339631
• Number of final Tic-Tac-Toe positions on a (2*n+1) X 3 board that result in a tie.at n=10A339634
• Irregular table read by rows: T(n,k) is the number of k-gons, k>=2, in the Farey Ring graph FR(n) defined in A359116.at n=48A359119