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A026721 as a simple table

n a(n)
0 1
1 2
2 5
3 12
4 29
5 68
6 163
7 376
8 895
9 2046
10 4845
11 11018
12 25997
13 58930
14 138699
15 313756
16 737185
17 1665342
18 3908059
19 8820378
20 20681069
21 46646884
22 109305969
23 246433804
24 577207671
25 1300924056
26 3046122447
27 6863883442
28 16068177699

[1,2,5,12,29,68,163,376,895,2046,4845,11018,25997,
 58930,138699,313756,737185,1665342,3908059,
 8820378,20681069,46646884,109305969,246433804,
 577207671,1300924056,3046122447,6863883442,
 16068177699]

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Last modified April 23 11:35 EDT 2024. Contains 371912 sequences. (Running on oeis4.)