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A054618 as a simple table

n a(n)
1 1
2 2
3 6
4 3
5 12
6 33
7 4
8 24
9 96
10 280
11 5
12 40
13 255
14 1040
15 3145
16 6
17 84
18 780
19 4200
20 15810
21 46956
22 7
23 140
24 2205
25 16408
26 78155
27 279972
28 823585
29 8
30 288
31 6672
32 65840
33 391320
34 1681008
35 5767328
36 16781472
37 9
38 540
39 19755
40 262296
41 1953405
42 10078164
43 40354335
44 134218800
45 387422001

[1,2,6,3,12,33,4,24,96,280,5,40,255,1040,3145,6,
 84,780,4200,15810,46956,7,140,2205,16408,78155,
 279972,823585,8,288,6672,65840,391320,1681008,
 5767328,16781472,9,540,19755,262296,1953405,
 10078164,40354335,134218800,387422001]

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Last modified April 17 23:23 EDT 2024. Contains 371767 sequences. (Running on oeis4.)