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A119827 as a simple table

n a(n)
0 0
1 0
2 0
3 1
4 4
5 16
6 60
7 212
8 728
9 2444
10 8064
11 26256
12 84576
13 270048
14 855936
15 2696080
16 8446912
17 26341696
18 81812544
19 253181888
20 781005440
21 2402311616
22 7370247168
23 22558917120
24 68901651456
25 210037106688
26 639127277568
27 1941624275200

[0,0,0,1,4,16,60,212,728,2444,8064,26256,84576,
 270048,855936,2696080,8446912,26341696,81812544,
 253181888,781005440,2402311616,7370247168,
 22558917120,68901651456,210037106688,639127277568,
 1941624275200]

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Last modified September 16 11:09 EDT 2019. Contains 327095 sequences. (Running on oeis4.)