A147014 - OEIS

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A147014 as a simple table

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	5
8	13
9	31
10	111
11	377
12	1545
13	10231
14	72633
15	559663
16	5155711
17	55582209
18	698619471
19	11001973207
20	206072905483
21	4521907343165
22	116328599746355
23	3545239477906611
24	127491366766265465

[1,1,1,1,1,1,5,13,31,111,377,1545,10231,72633, 559663,5155711,55582209,698619471,11001973207, 206072905483,4521907343165,116328599746355, 3545239477906611,127491366766265465]