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A219871 as a simple table

n a(n)
0 1
1 4
2 123
3 5233
4 161800
5 6155230
6 223026907
7 8061851335
8 295743829064
9 10750194262698
10 392127322268846
11 14301080443962397
12 521186161714401053
13 19005127884701974465
14 692863015545590519355
15 25260000472133325186613
16 920954865421382858310101

[1,4,123,5233,161800,6155230,223026907,8061851335,
 295743829064,10750194262698,392127322268846,
 14301080443962397,521186161714401053,
 19005127884701974465,692863015545590519355,
 25260000472133325186613,920954865421382858310101]

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Last modified February 24 07:07 EST 2024. Contains 370294 sequences. (Running on oeis4.)