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A178834 as a simple table

n a(n)
0 0
1 0
2 1
3 5
4 23
5 91
6 341
7 1221
8 4249
9 14465
10 48442
11 160134
12 523872
13 1699252
14 5472713
15 17520217
16 55801733
17 176942269
18 558906164
19 1759436704
20 5522119250
21 17285351782
22 53977433618
23 168194390290
24 523076690018
25 1623869984706

[0,0,1,5,23,91,341,1221,4249,14465,48442,160134,
 523872,1699252,5472713,17520217,55801733,
 176942269,558906164,1759436704,5522119250,
 17285351782,53977433618,168194390290,523076690018,
 1623869984706]

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Last modified September 25 21:33 EDT 2017. Contains 292500 sequences.