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A271834 as a simple table

n a(n)
1 0
2 0
3 0
4 4
5 0
6 42
7 0
8 116
9 162
10 730
11 0
12 2458
13 0
14 11494
15 16890
16 32628
17 0
18 180960
19 0
20 554994
21 931476
22 2800534
23 0
24 11005898
25 6643750
26 43946838
27 44738892
28 136580910
29 0
30 720879712
31 0
32 2147450740
33 3250382916
34 10923409738
35 11517062060
36 45683761528
37 0
38 172783692982

[0,0,0,4,0,42,0,116,162,730,0,2458,0,11494,16890,
 32628,0,180960,0,554994,931476,2800534,0,11005898,
 6643750,43946838,44738892,136580910,0,720879712,0,
 2147450740,3250382916,10923409738,11517062060,
 45683761528,0,172783692982]

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Last modified January 18 11:33 EST 2019. Contains 319271 sequences. (Running on oeis4.)