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A025236 as a simple table

n a(n)
1 1
2 3
3 3
4 12
5 30
6 111
7 363
8 1353
9 4917
10 18777
11 71769
12 280506
13 1103556
14 4395009
15 17622309

[1,3,3,12,30,111,363,1353,4917,18777,71769,280506,
 1103556,4395009,17622309]

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Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)