52565

Appears in sequences

• Number of non-intersecting cycle systems in a particular directed graph.at n=8A112831
• a(n) = -a(n-1) + 3*a(n-2), starting a(1)=1, a(2)=2.at n=15A140165
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 1, 0), (0, 0, -1), (1, 0, 1), (1, 1, -1)}.at n=9A149364