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A098912 as a simple table

n a(n)
2 1
3 5
4 16
5 54
6 180
7 607
8 2098
9 7397
10 26452
11 95821
12 350554
13 1292634
14 4797694
15 17904220
16 67125898
17 252679320
18 954505718
19 3616951513
20 13744169104
21 52358244166
22 199912298266
23 764879838343
24 2932035371786
25 11259007784430
26 43303859981236
27 166800020984581

[1,5,16,54,180,607,2098,7397,26452,95821,350554,
 1292634,4797694,17904220,67125898,252679320,
 954505718,3616951513,13744169104,52358244166,
 199912298266,764879838343,2932035371786,
 11259007784430,43303859981236,166800020984581]

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)