492459domain: NAppears in sequencesTransform of A059502 applied to sequence 3,4,5,...at n=12A059506Number of distinct grids after n moves in the 4T version of Morpion Solitaire.at n=6A204110a(n) = Sum_{k=0..n} binomial(n+k-1,k) * binomial(2*n+k-1,n-k).at n=7A378460