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A277639 as a simple table

n a(n)
0 1
1 4
2 43
3 718
4 14779
5 344452
6 8725093
7 234594766
8 6596287411
9 192032529388
10 5747827847545
11 175986201591130
12 5490952102178725
13 174077883157001740
14 5594651323154783515
15 181946073109880839450
16 5978730547304013537475
17 198263347772478727193740
18 6628299876919271425393105
19 223211734849614639629628010
20 7566093949269408444819804937

[1,4,43,718,14779,344452,8725093,234594766,
 6596287411,192032529388,5747827847545,
 175986201591130,5490952102178725,
 174077883157001740,5594651323154783515,
 181946073109880839450,5978730547304013537475,
 198263347772478727193740,
 6628299876919271425393105,
 223211734849614639629628010,
 7566093949269408444819804937]

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Last modified February 3 18:13 EST 2023. Contains 360044 sequences. (Running on oeis4.)