A102318 - OEIS

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A102318 as a simple table

n	a(n)
0	1
1	1
2	3
3	8
4	27
5	97
6	373
7	1493
8	6163
9	26027
10	111897
11	488006
12	2153429
13	9596199
14	43121211
15	195165576
16	888861555
17	4070582971
18	18732710281
19	86584519280
20	401776434017
21	1870983991035
22	8740907398527
23	40956401225597

[1,1,3,8,27,97,373,1493,6163,26027,111897,488006, 2153429,9596199,43121211,195165576,888861555, 4070582971,18732710281,86584519280,401776434017, 1870983991035,8740907398527,40956401225597]