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A054359 as a simple table

n a(n)
1 1
2 1
3 2
4 5
5 12
6 35
7 104
8 343
9 1050
10 3070
11 6620
12 23449
13 38669
14 109104
15 279583
16 546893
17 827035
18 3057332
19 3381124
20 12126683
21 21921192
22 37008138
23 53327764
24 220908809
25 271293803

[1,1,2,5,12,35,104,343,1050,3070,6620,23449,38669,
 109104,279583,546893,827035,3057332,3381124,
 12126683,21921192,37008138,53327764,220908809,
 271293803]

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Last modified February 21 19:40 EST 2019. Contains 320376 sequences. (Running on oeis4.)