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A304826 as a simple table

n a(n)
1 8
2 72
3 520
4 3656
5 25608
6 179272
7 1254920
8 8784456
9 61491208
10 430438472
11 3013069320
12 21091485256
13 147640396808
14 1033482777672
15 7234379443720
16 50640656106056
17 354484592742408
18 2481392149196872
19 17369745044378120
20 121588215310646856
21 851117507174528008
22 5957822550221696072

[8,72,520,3656,25608,179272,1254920,8784456,
 61491208,430438472,3013069320,21091485256,
 147640396808,1033482777672,7234379443720,
 50640656106056,354484592742408,2481392149196872,
 17369745044378120,121588215310646856,
 851117507174528008,5957822550221696072]

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Last modified August 25 03:55 EDT 2019. Contains 326318 sequences. (Running on oeis4.)