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A260786 as a simple table

n a(n)
0 2
1 2
2 2
3 4
4 10
5 32
6 122
7 544
8 2770
9 15872
10 101042
11 707584
12 5405530
13 44736512
14 398721962
15 3807514624
16 38783024290
17 419730685952
18 4809759350882
19 58177770225664
20 740742376475050
21 9902996106248192
22 138697748786275802
23 2030847773013704704
24 31029068327114173810
25 493842960380415967232

[2,2,2,4,10,32,122,544,2770,15872,101042,707584,
 5405530,44736512,398721962,3807514624,38783024290,
 419730685952,4809759350882,58177770225664,
 740742376475050,9902996106248192,
 138697748786275802,2030847773013704704,
 31029068327114173810,493842960380415967232]

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Last modified September 23 11:13 EDT 2021. Contains 347612 sequences. (Running on oeis4.)