A121002 - OEIS

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A121002 as a simple table

n	a(n)
0	1
1	6
2	32
3	33
4	839
5	4237
6	21317
7	107014
8	4292
9	2687362
10	13453606
11	67326816
12	336842092
13	336990672
14	1685488248
15	8429380209
16	42153972579
17	210795791853
18	210814897401
19	5270725887663
20	26354942262399

[1,6,32,33,839,4237,21317,107014,4292,2687362, 13453606,67326816,336842092,336990672,1685488248, 8429380209,42153972579,210795791853,210814897401, 5270725887663,26354942262399]