105147

Appears in sequences

• Number of 3Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 0 vertically.at n=11A207243
• Number of n-bead necklaces labeled with numbers -6..6 allowing reversal, with sum zero and three times sum of squares <= n*(6)*(6+1).at n=6A208803
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,0) = 0^n and T(n,k) = k * Sum_{r=0..n} binomial(3r+k,r) * binomial(r,n-r)/(3*r+k) for k > 0.at n=62A378323