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A047780 as a simple table

n a(n)
0 0
1 1
2 10
3 57
4 240
5 800
6 2226
7 5390
8 11712
9 23355
10 43450
11 76351
12 127920
13 205842
14 319970
15 482700
16 709376
17 1018725
18 1433322
19 1980085
20 2690800
21 3602676
22 4758930
23 6209402
24 8011200
25 10229375
26 12937626
27 16219035
28 20166832
29 24885190
30 30490050

[0,1,10,57,240,800,2226,5390,11712,23355,43450,
 76351,127920,205842,319970,482700,709376,1018725,
 1433322,1980085,2690800,3602676,4758930,6209402,
 8011200,10229375,12937626,16219035,20166832,
 24885190,30490050]

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Last modified April 24 13:38 EDT 2024. Contains 371957 sequences. (Running on oeis4.)