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A026118 as a simple table

n a(n)
6 5
7 20
8 100
9 431
10 1937
11 8548
12 38199
13 171001
14 770934
15 3492251
16 15905897
17 72785480
18 334571647
19 1544203452
20 7154247842
21 33260560977
22 155126129968
23 725639264293
24 3403612632885
25 16004969728270
26 75437244856898
27 356337397010035
28 1686618801843050

[5,20,100,431,1937,8548,38199,171001,770934,
 3492251,15905897,72785480,334571647,1544203452,
 7154247842,33260560977,155126129968,725639264293,
 3403612632885,16004969728270,75437244856898,
 356337397010035,1686618801843050]

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Last modified April 16 19:05 EDT 2024. Contains 371751 sequences. (Running on oeis4.)