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A078487 as a simple table

n a(n)
0 0
1 1
2 2
3 6
4 23
5 100
6 464
7 2236
8 11048
9 55588
10 283648
11 1463868
12 7626296
13 40049188
14 211768752
15 1126513788
16 6024316488
17 32368294756
18 174645900768
19 945893037948
20 5140619493464
21 28024941448420
22 153219244012432
23 839884005112636
24 4615012956649832
25 25415266785076900

[0,1,2,6,23,100,464,2236,11048,55588,283648,
 1463868,7626296,40049188,211768752,1126513788,
 6024316488,32368294756,174645900768,945893037948,
 5140619493464,28024941448420,153219244012432,
 839884005112636,4615012956649832,
 25415266785076900]

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Last modified September 17 03:42 EDT 2021. Contains 347478 sequences. (Running on oeis4.)