A007816 - cp's OEIS frontend

A007816 Number of abstract simplicial 2-complexes on {1,2,3,...,n+3} which triangulate the 2-sphere: C(n+3,2)*(4n+1)!/(3n+3)!.

n	a(n)
1	1
2	10
3	195
4	5712
5	223440
6	10929600
7	641277000
8	43859692800
9	3424685806080
10	300495408595200
11	29262949937020800
12	3131187613956864000
13	365112996737448960000
14	46075561988281233408000

[1, 10, 195, 5712, 223440, 10929600, 641277000, 43859692800, 3424685806080, 300495408595200, 29262949937020800, 3131187613956864000, 365112996737448960000, 46075561988281233408000]

cp's OEIS Frontend

A007816 Number of abstract simplicial 2-complexes on {1,2,3,...,n+3} which triangulate the 2-sphere: C(n+3,2)*(4n+1)!/(3n+3)!.

Table of values

List of values