271285

Appears in sequences

• Number of tree-rooted toroidal maps with 3 faces and n vertices and without isthmuses.at n=3A006437
• Convolution of natural numbers n >= 1 with Lucas numbers L(k) (A000032) for k >= 3.at n=19A033813
• 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, 0, 1), (0, -1, 1), (1, 1, 0)}.at n=12A148677
• Number of magic labelings with magic sum n of 8th graph shown in link.at n=9A244876