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A210915 as a simple table

n a(n)
0 1
1 1
2 4
3 26
4 243
5 2992
6 45906
7 845287
8 17637091
9 412976516
10 10702355041
11 304058582059
12 9396887340381
13 313853270626962
14 11265355519125229
15 432420217726582213
16 17674492093095982705
17 766343475354260380416
18 35129831766609666284023
19 1697466558811335003294745

[1,1,4,26,243,2992,45906,845287,17637091,
 412976516,10702355041,304058582059,9396887340381,
 313853270626962,11265355519125229,
 432420217726582213,17674492093095982705,
 766343475354260380416,35129831766609666284023,
 1697466558811335003294745]

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Last modified September 29 00:22 EDT 2023. Contains 365739 sequences. (Running on oeis4.)