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A051292 as a simple table

n a(n)
0 2
1 1
2 1
3 4
4 9
5 21
6 52
7 127
8 313
9 778
10 1941
11 4863
12 12228
13 30837
14 77967
15 197574
16 501657
17 1275987
18 3250618
19 8292703
20 21182509
21 54169966
22 138674031
23 355343469
24 911347684
25 2339226871
26 6008781637
27 15445521202
28 39728258103
29 102248793573
30 263306364822
31 678411876729
32 1748800672089

[2,1,1,4,9,21,52,127,313,778,1941,4863,12228,
 30837,77967,197574,501657,1275987,3250618,8292703,
 21182509,54169966,138674031,355343469,911347684,
 2339226871,6008781637,15445521202,39728258103,
 102248793573,263306364822,678411876729,
 1748800672089]

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Last modified August 7 09:16 EDT 2020. Contains 336274 sequences. (Running on oeis4.)