A113203 - cp's OEIS frontend

A113203 Number of isomorphism classes of simple quadrangulations of the sphere having n vertices and n-2 faces, minimal degree 3, with orientation-reversing isomorphisms forbidden.

n	a(n)
8	1
9	0
10	1
11	1
12	4
13	3
14	16
15	26
16	99
17	256
18	895
19	2789
20	9740
21	32799
22	115024
23	401180
24	1421170
25	5046539
26	18066772
27	64940825
28	234712099
29	851801048
30	3104690139
31	11358900851
32	41710948878
33	153684688127
34	568079430741
35	2106188450292

[1, 0, 1, 1, 4, 3, 16, 26, 99, 256, 895, 2789, 9740, 32799, 115024, 401180, 1421170, 5046539, 18066772, 64940825, 234712099, 851801048, 3104690139, 11358900851, 41710948878, 153684688127, 568079430741, 2106188450292]

cp's OEIS Frontend

A113203 Number of isomorphism classes of simple quadrangulations of the sphere having n vertices and n-2 faces, minimal degree 3, with orientation-reversing isomorphisms forbidden.

Table of values

List of values