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A268164 as a simple table

n a(n)
1 1
2 4
3 15
4 55
5 197
6 695
7 2421
8 8351
9 28573
10 97111
11 328197
12 1103887
13 3697709
14 12342407
15 41069973
16 136292543
17 451213885
18 1490644663
19 4915285029
20 16180569199
21 53184539981
22 174578141159
23 572354795445
24 1874403215135
25 6132368790877

[1,4,15,55,197,695,2421,8351,28573,97111,328197,
 1103887,3697709,12342407,41069973,136292543,
 451213885,1490644663,4915285029,16180569199,
 53184539981,174578141159,572354795445,
 1874403215135,6132368790877]

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Last modified September 28 03:06 EDT 2020. Contains 337392 sequences. (Running on oeis4.)