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A299523 as a simple table

n a(n)
1 0
2 4
3 1
4 12
5 35
6 60
7 269
8 873
9 1985
10 7571
11 24138
12 65389
13 225530
14 714174
15 2097771
16 6892581
17 21742964
18 66279272
19 212788613
20 670024373
21 2077242857
22 6596234246
23 20753371856
24 64838337595
25 204829582459
26 644229872136
27 2019822965143

[0,4,1,12,35,60,269,873,1985,7571,24138,65389,
 225530,714174,2097771,6892581,21742964,66279272,
 212788613,670024373,2077242857,6596234246,
 20753371856,64838337595,204829582459,644229872136,
 2019822965143]

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Last modified August 23 12:02 EDT 2019. Contains 326222 sequences. (Running on oeis4.)