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A143571 as a simple table

n a(n)
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 9
9 73
10 361
11 1321
12 3961
13 10297
14 24025
15 77221
16 926641
17 10696401
18 84365425
19 499445857
20 2395445521
21 9778915441
22 36584246161
23 248210675593
24 3971313933049
25 54773770095001
26 549282704399001
27 4258482133019401
28 27025791550397641

[1,1,1,1,1,1,1,1,9,73,361,1321,3961,10297,24025,
 77221,926641,10696401,84365425,499445857,
 2395445521,9778915441,36584246161,248210675593,
 3971313933049,54773770095001,549282704399001,
 4258482133019401,27025791550397641]

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Last modified May 25 00:03 EDT 2022. Contains 354047 sequences. (Running on oeis4.)