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A086855 as a simple table

n a(n)
0 0
1 0
2 0
3 0
4 0
5 2
6 22
7 226
8 2198
9 22120
10 236968
11 2732268
12 33940644
13 453148422
14 6480322210
15 98907371822
16 1605581578202
17 27631315113916
18 502618772515748
19 9637245372790760
20 194291040277517688
21 4109014039030693578
22 90968013940830446574
23 2104072961763468757082

[0,0,0,0,0,2,22,226,2198,22120,236968,2732268,
 33940644,453148422,6480322210,98907371822,
 1605581578202,27631315113916,502618772515748,
 9637245372790760,194291040277517688,
 4109014039030693578,90968013940830446574,
 2104072961763468757082]

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Last modified May 31 16:29 EDT 2020. Contains 334748 sequences. (Running on oeis4.)