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A221206 as a simple table

n a(n)
1 2
2 5
3 12
4 33
5 93
6 269
7 788
8 2330
9 6947
10 20840
11 62834
12 190240
13 577990
14 1761279
15 5380796
16 16475256
17 50543777
18 155330201
19 478096270
20 1473591670
21 4547602623
22 14050145290
23 43453847676
24 134519899690
25 416794664987
26 1292425391245
27 4010608533780
28 12454122695249

[2,5,12,33,93,269,788,2330,6947,20840,62834,
 190240,577990,1761279,5380796,16475256,50543777,
 155330201,478096270,1473591670,4547602623,
 14050145290,43453847676,134519899690,416794664987,
 1292425391245,4010608533780,12454122695249]

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Last modified November 29 21:32 EST 2021. Contains 349416 sequences. (Running on oeis4.)