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A213758 as a simple table

n a(n)
1 1
2 9
3 40
4 130
5 355
6 871
7 1994
8 4360
9 9245
10 19205
11 39356
12 79934
13 161415
14 324755
15 651870
16 1306596
17 2616609
18 5237265
19 10479280
20 20964090
21 41934571
22 83876479
23 167761330
24 335532160
25 671075045
26 1342162141
27 2684337764
28 5368690550

[1,9,40,130,355,871,1994,4360,9245,19205,39356,
 79934,161415,324755,651870,1306596,2616609,
 5237265,10479280,20964090,41934571,83876479,
 167761330,335532160,671075045,1342162141,
 2684337764,5368690550]

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Last modified June 6 07:26 EDT 2024. Contains 373115 sequences. (Running on oeis4.)