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A074082 as a simple table

n a(n)
0 0
1 0
2 0
3 0
4 2
5 6
6 16
7 37
8 81
9 169
10 342
11 675
12 1307
13 2491
14 4686
15 8718
16 16066
17 29364
18 53282
19 96065
20 172215
21 307151
22 545286
23 963993
24 1697701
25 2979383
26 5211852
27 9090060
28 15810530
29 27429426
30 47473828
31 81983773
32 141286221
33 243011173

[0,0,0,0,2,6,16,37,81,169,342,675,1307,2491,4686,
 8718,16066,29364,53282,96065,172215,307151,545286,
 963993,1697701,2979383,5211852,9090060,15810530,
 27429426,47473828,81983773,141286221,243011173]

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Last modified April 26 12:20 EDT 2019. Contains 322472 sequences. (Running on oeis4.)