100251domain: NAppears in sequencesNumber of walks within N^2 (the first quadrant of Z^2) starting at (0,0) and consisting of n steps taken from {(-1, -1), (-1, 1), (-1, 0), (1, -1), (1, 0)}.at n=11A151264Sum of the middle parts in the partitions of 4n-1 into 3 parts.at n=40A240707