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A018914 as a simple table

n a(n)
0 2
1 5
2 12
3 28
4 65
5 150
6 346
7 798
8 1840
9 4242
10 9779
11 22543
12 51967
13 119796
14 276157
15 636604
16 1467515
17 3382951
18 7798460
19 17977197
20 41441465
21 95531857
22 220222323
23 507661769
24 1170274058
25 2697743762
26 6218903474
27 14335965099
28 33047609788
29 76182140871
30 175616894078

[2,5,12,28,65,150,346,798,1840,4242,9779,22543,
 51967,119796,276157,636604,1467515,3382951,
 7798460,17977197,41441465,95531857,220222323,
 507661769,1170274058,2697743762,6218903474,
 14335965099,33047609788,76182140871,175616894078]

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Last modified April 20 11:40 EDT 2024. Contains 371838 sequences. (Running on oeis4.)