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A127210 as a simple table

n a(n)
1 3
2 27
3 108
4 567
5 2673
6 13122
7 63423
8 308367
9 1495908
10 7263027
11 35252253
12 171124002
13 830642283
14 4032042867
15 19571909148
16 95004113247
17 461159522073
18 2238515585442
19 10865982454983
20 52744587633927
21 256027604996628
22 1242784103695227
23 6032600756055333
24 29282859201423042

[3,27,108,567,2673,13122,63423,308367,1495908,
 7263027,35252253,171124002,830642283,4032042867,
 19571909148,95004113247,461159522073,
 2238515585442,10865982454983,52744587633927,
 256027604996628,1242784103695227,6032600756055333,
 29282859201423042]

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Last modified September 23 09:03 EDT 2020. Contains 337298 sequences. (Running on oeis4.)