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A187430 as a simple table

n a(n)
0 1
1 0
2 2
3 2
4 11
5 24
6 93
7 272
8 971
9 3194
10 11293
11 39148
12 139687
13 497756
14 1798002
15 6517194
16 23807731
17 87336870
18 322082967
19 1192381270
20 4431889344
21 16527495396
22 61831374003
23 231973133544
24 872598922407
25 3290312724374
26 12434632908623
27 47089829065940
28 178672856753641

[1,0,2,2,11,24,93,272,971,3194,11293,39148,139687,
 497756,1798002,6517194,23807731,87336870,
 322082967,1192381270,4431889344,16527495396,
 61831374003,231973133544,872598922407,
 3290312724374,12434632908623,47089829065940,
 178672856753641]

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Last modified April 12 15:00 EDT 2021. Contains 342921 sequences. (Running on oeis4.)