108680

Appears in sequences

• Number of rooted toroidal maps with 2 faces and n vertices and without separating cycles or isthmuses.at n=10A006422
• Sum of numbers under a triangle on a spiral staircase of width 10.at n=37A111080
• Product of Lucas and Catalan numbers: a(n) = A000032(n+1)*A000108(n).at n=8A216541
• Number of unlabeled semi-binary rooted trees with n nodes in which the non-leaf branches directly under any given node are all equal.at n=24A320271
• Numbers n such that A324187(n) = 0.at n=27A324199
• Numbers k such that A360327(k) = A360327(k+1) > 1.at n=29A360358