A014829 - OEIS

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A014829 as a simple table

n	a(n)
1	1
2	8
3	51
4	310
5	1865
6	11196
7	67183
8	403106
9	2418645
10	14511880
11	87071291
12	522427758
13	3134566561
14	18807399380
15	112844396295
16	677066377786
17	4062398266733
18	24374389600416
19	146246337602515
20	877478025615110

[1,8,51,310,1865,11196,67183,403106,2418645, 14511880,87071291,522427758,3134566561, 18807399380,112844396295,677066377786, 4062398266733,24374389600416,146246337602515, 877478025615110]