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A006980 as a simple table

n a(n)
6 1
7 2
8 5
9 12
10 28
11 64
12 143
13 315
14 687
15 1485
16 3186
17 6792
18 14401
19 30391
20 63872
21 133751
22 279177
23 581040
24 1206151
25 2497895
26 5161982
27 10646564
28 21919161
29 45052841
30 92461171
31 189489255
32 387830160
33 792810956
34 1618840800
35 3301999647

[1,2,5,12,28,64,143,315,687,1485,3186,6792,14401,
 30391,63872,133751,279177,581040,1206151,2497895,
 5161982,10646564,21919161,45052841,92461171,
 189489255,387830160,792810956,1618840800,
 3301999647]

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Last modified April 25 05:18 EDT 2024. Contains 371964 sequences. (Running on oeis4.)