A080254 - cp's OEIS frontend

A080254 For n>3, a(n) is the number of elements in the Coxeter complex of type D_n (although the sequence starts at n=0. See comments below for precise explanation).

n	a(n)
0	1
1	1
2	9
3	75
4	865
5	12483
6	216113
7	4364979
8	100757313
9	2616517443
10	75496735057
11	2396212835283
12	82968104980961
13	3112139513814243
14	125716310807844081
15	5441108944839913587
16	251195548533025953409
17	12321551453507301079683

[1, 1, 9, 75, 865, 12483, 216113, 4364979, 100757313, 2616517443, 75496735057, 2396212835283, 82968104980961, 3112139513814243, 125716310807844081, 5441108944839913587, 251195548533025953409, 12321551453507301079683]

cp's OEIS Frontend

A080254 For n>3, a(n) is the number of elements in the Coxeter complex of type D_n (although the sequence starts at n=0. See comments below for precise explanation).

Table of values

List of values