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A156289 as a simple table

n a(n)
1 1
2 1
3 3
4 1
5 15
6 15
7 1
8 63
9 210
10 105
11 1
12 255
13 2205
14 3150
15 945
16 1
17 1023
18 21120
19 65835
20 51975
21 10395
22 1
23 4095
24 195195
25 1201200
26 1891890
27 945945
28 135135
29 1
30 16383
31 1777230
32 20585565
33 58108050
34 54864810
35 18918900
36 2027025
37 1
38 65535
39 16076985

[1,1,3,1,15,15,1,63,210,105,1,255,2205,3150,945,1,
 1023,21120,65835,51975,10395,1,4095,195195,
 1201200,1891890,945945,135135,1,16383,1777230,
 20585565,58108050,54864810,18918900,2027025,1,
 65535,16076985]

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Last modified March 28 08:22 EDT 2024. Contains 371236 sequences. (Running on oeis4.)