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A000541 as a simple table

n a(n)
0 0
1 1
2 129
3 2316
4 18700
5 96825
6 376761
7 1200304
8 3297456
9 8080425
10 18080425
11 37567596
12 73399404
13 136147921
14 241561425
15 412420800
16 680856256
17 1091194929
18 1703414961
19 2597286700
20 3877286700
21 5678375241
22 8172733129
23 11577558576
24 16164030000
25 22267545625

[0,1,129,2316,18700,96825,376761,1200304,3297456,
 8080425,18080425,37567596,73399404,136147921,
 241561425,412420800,680856256,1091194929,
 1703414961,2597286700,3877286700,5678375241,
 8172733129,11577558576,16164030000,22267545625]

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Last modified January 15 18:52 EST 2019. Contains 319170 sequences. (Running on oeis4.)