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A209118 as a simple table

n a(n)
1 15
2 238
3 1373
4 5032
5 14037
6 32802
7 67681
8 127310
9 222965
10 368920
11 582789
12 885874
13 1303543
14 1865552
15 2606403
16 3565722
17 4788571
18 6325826
19 8234535
20 10578240
21 13427355
22 16859514
23 20959913
24 25821668
25 31546173
26 38243442
27 46032457
28 55041546

[15,238,1373,5032,14037,32802,67681,127310,222965,
 368920,582789,885874,1303543,1865552,2606403,
 3565722,4788571,6325826,8234535,10578240,13427355,
 16859514,20959913,25821668,31546173,38243442,
 46032457,55041546]

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Last modified December 3 22:32 EST 2021. Contains 349468 sequences. (Running on oeis4.)