A121158 - cp's OEIS frontend

A121158 Number of spiro bicyclic skeletons with n carbon atoms (see Parks et al. for precise definition).

n	a(n)
5	1
6	1
7	5
8	10
9	34
10	82
11	240
12	630
13	1764
14	4752
15	13108
16	35703
17	98108
18	268553
19	737864
20	2025779
21	5572160
22	15331017
23	42230755
24	116395955
25	321089489
26	886320404
27	2448312482
28	6767186801
29	18716207007
30	51792971141
31	143403624284
32	397254931272
33	1101003729796
34	3052855074597

[1, 1, 5, 10, 34, 82, 240, 630, 1764, 4752, 13108, 35703, 98108, 268553, 737864, 2025779, 5572160, 15331017, 42230755, 116395955, 321089489, 886320404, 2448312482, 6767186801, 18716207007, 51792971141, 143403624284, 397254931272, 1101003729796, 3052855074597]

cp's OEIS Frontend

A121158 Number of spiro bicyclic skeletons with n carbon atoms (see Parks et al. for precise definition).

Table of values

List of values