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A008401 as a simple table

n a(n)
0 1
1 54
2 828
3 5202
4 20376
5 60030
6 146484
7 312858
8 605232
9 1084806
10 1830060
11 2938914
12 4530888
13 6749262
14 9763236
15 13770090
16 18997344
17 25704918
18 34187292
19 44775666
20 57840120
21 73791774
22 93084948

[1,54,828,5202,20376,60030,146484,312858,605232,
 1084806,1830060,2938914,4530888,6749262,9763236,
 13770090,18997344,25704918,34187292,44775666,
 57840120,73791774,93084948]

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Last modified March 26 12:43 EDT 2019. Contains 321497 sequences. (Running on oeis4.)