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A143915 as a simple table

n a(n)
0 1
1 1
2 2
3 5
4 7
5 19
6 102
7 529
8 631
9 350103
10 1050940
11 4553863
12 5604803
13 133464332
14 272533467
15 2586265535
16 5445064537
17 8031330072
18 2455000736497
19 2463032066569
20 4918032803066
21 7381064869635
22 27061227411971
23 142687201929490

[1,1,2,5,7,19,102,529,631,350103,1050940,4553863,
 5604803,133464332,272533467,2586265535,5445064537,
 8031330072,2455000736497,2463032066569,
 4918032803066,7381064869635,27061227411971,
 142687201929490]

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Last modified January 17 20:36 EST 2020. Contains 330987 sequences. (Running on oeis4.)