A084098 - OEIS

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A084098 as a simple table

n	a(n)
0	0
1	1
2	2
3	11
4	36
5	341
6	1702
7	23071
8	154056
9	2691241
10	22470602
11	479886131
12	4808343276
13	121361260541
14	1418683841902
15	41316096677191
16	551971861815696
17	18218322689532241
18	273815850521907602
19	10100775754144668251

[0,1,2,11,36,341,1702,23071,154056,2691241, 22470602,479886131,4808343276,121361260541, 1418683841902,41316096677191,551971861815696, 18218322689532241,273815850521907602, 10100775754144668251]