977939

Appears in sequences

• a(n) is the number of the two-sided n-step prudent walks ending on the top side of their box, avoiding both patterns Left^k and Down^k for k>=3.at n=15A178035
• Number of n X n (-1,0,1) arrays of determinants of 2X2 subblocks of some (n+1)X(n+1) binary array.at n=3A226709
• Number of nX4 (-1,0,1) arrays of determinants of 2X2 subblocks of some (n+1)X5 binary array.at n=3A226713
• T(n,k)=Number of nXk (-1,0,1) arrays of determinants of 2X2 subblocks of some (n+1)X(k+1) binary array.at n=24A226717