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A183971 as a simple table

n a(n)
1 81
2 459
3 459
4 2601
5 4401
6 2601
7 15759
8 43163
9 43163
10 15759
11 95481
12 459821
13 746017
14 459821
15 95481
16 586791
17 4911675
18 14219749
19 14219749
20 4911675
21 586791
22 3606201
23 53575889
24 272110811
25 492135291
26 272110811
27 53575889
28 3606201
29 22235391

[81,459,459,2601,4401,2601,15759,43163,43163,
 15759,95481,459821,746017,459821,95481,586791,
 4911675,14219749,14219749,4911675,586791,3606201,
 53575889,272110811,492135291,272110811,53575889,
 3606201,22235391]

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Last modified December 8 07:12 EST 2023. Contains 367662 sequences. (Running on oeis4.)