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A293004 as a simple table

n a(n)
0 0
1 0
2 2
3 6
4 16
5 40
6 98
7 238
8 576
9 1392
10 3362
11 8118
12 19600
13 47320
14 114242
15 275806
16 665856
17 1607520
18 3880898
19 9369318
20 22619536
21 54608392
22 131836322
23 318281038
24 768398400
25 1855077840
26 4478554082
27 10812186006
28 26102926096
29 63018038200
30 152139002498

[0,0,2,6,16,40,98,238,576,1392,3362,8118,19600,
 47320,114242,275806,665856,1607520,3880898,
 9369318,22619536,54608392,131836322,318281038,
 768398400,1855077840,4478554082,10812186006,
 26102926096,63018038200,152139002498]

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Last modified June 8 03:28 EDT 2024. Contains 373207 sequences. (Running on oeis4.)