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A019166 as a simple table

n a(n)
3 0
4 0
5 6
6 4
7 4
8 33
9 55
10 95
11 291
12 628
13 1309
14 3349
15 8195
16 19803
17 49968
18 127374
19 328464
20 851809
21 2221390
22 5855200
23 15465224
24 40887162
25 108565617
26 288670285
27 767774575
28 2045483183
29 5456153646
30 14564067161
31 38919814973

[0,0,6,4,4,33,55,95,291,628,1309,3349,8195,19803,
 49968,127374,328464,851809,2221390,5855200,
 15465224,40887162,108565617,288670285,767774575,
 2045483183,5456153646,14564067161,38919814973]

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Last modified November 22 00:32 EST 2019. Contains 329383 sequences. (Running on oeis4.)