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A229888 as a simple table

n a(n)
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 8
10 36
11 120
12 330
13 792
14 1716
15 3432
16 48477
17 368797
18 2002429
19 8685469
20 31964725
21 103593205
22 303129685
23 6156709438
24 66139517554
25 498859498016
26 2961422519550
27 14715247475500
28 63593705003400
29 245316996896400
30 6498850067259615

[1,1,1,1,1,1,1,1,1,8,36,120,330,792,1716,3432,
 48477,368797,2002429,8685469,31964725,103593205,
 303129685,6156709438,66139517554,498859498016,
 2961422519550,14715247475500,63593705003400,
 245316996896400,6498850067259615]

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Last modified March 28 05:02 EDT 2024. Contains 371235 sequences. (Running on oeis4.)