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A216211 as a simple table

n a(n)
1 1
2 4
3 28
4 178
5 1008
6 5493
7 29879
8 163357
9 895519
10 4911542
11 26932856
12 147666219
13 809584243
14 4438588016
15 24334993398
16 133419407518
17 731487440774
18 4010463570150
19 21987820817522
20 120550714106036
21 660932932241338
22 3623639639745022
23 19867014703421770
24 108923158026586497
25 597183548915194615

[1,4,28,178,1008,5493,29879,163357,895519,4911542,
 26932856,147666219,809584243,4438588016,
 24334993398,133419407518,731487440774,
 4010463570150,21987820817522,120550714106036,
 660932932241338,3623639639745022,
 19867014703421770,108923158026586497,
 597183548915194615]

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Last modified August 22 05:00 EDT 2019. Contains 326172 sequences. (Running on oeis4.)