67086domain: NAppears in sequencesExpansion of 1/(1-x^4-x^5-x^6-x^7-x^8-x^9-x^10-x^11-x^12-x^13).at n=41A017835Number of unrooted n-edge maps in the plane (planar map with a distinguished outside face).at n=7A103937Maximal balanced binary trees in the Tamari lattices.at n=31A272371