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A138780 as a simple table

n a(n)
7 1
8 6
9 21
10 56
11 126
12 252
13 2
14 462
15 18
16 792
17 90
18 1287
19 330
20 2002
21 990
22 3003
23 2574
24 3
25 4368
26 6006
27 36
28 6188
29 12870
30 234
31 8568
32 25740
33 1092
34 11628
35 48620
36 4095
37 15504
38 87516
39 13104
40 4
41 20349
42 151164
43 37128
44 60

[1,6,21,56,126,252,2,462,18,792,90,1287,330,2002,
 990,3003,2574,3,4368,6006,36,6188,12870,234,8568,
 25740,1092,11628,48620,4095,15504,87516,13104,4,
 20349,151164,37128,60]

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Last modified September 23 19:48 EDT 2021. Contains 347617 sequences. (Running on oeis4.)