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A023902 as a simple table

n a(n)
0 1
1 132
2 2970
3 19800
4 66462
5 194832
6 420684
7 881760
8 1511730
9 2770284
10 4134240
11 6754968
12 9491130
13 14310120
14 18773964
15 27609648
16 34253142
17 47864520
18 58862870
19 78974808
20 93470652

[1,132,2970,19800,66462,194832,420684,881760,
 1511730,2770284,4134240,6754968,9491130,14310120,
 18773964,27609648,34253142,47864520,58862870,
 78974808,93470652]

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Last modified May 26 15:15 EDT 2019. Contains 323596 sequences. (Running on oeis4.)