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A284607 as a simple table

n a(n)
1 1
2 4
3 18
4 52
5 159
6 396
7 1004
8 2260
9 5103
10 10680
11 22260
12 44028
13 86453
14 163424
15 306288
16 557716
17 1006524
18 1775844
19 3105740
20 5333208
21 9081243
22 15231504
23 25343808
24 41636124
25 67891309
26 109500440
27 175378446
28 278234720
29 438540456
30 685449000
31 1064868020
32 1642037524

[1,4,18,52,159,396,1004,2260,5103,10680,22260,
 44028,86453,163424,306288,557716,1006524,1775844,
 3105740,5333208,9081243,15231504,25343808,
 41636124,67891309,109500440,175378446,278234720,
 438540456,685449000,1064868020,1642037524]

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Last modified April 25 08:27 EDT 2024. Contains 371964 sequences. (Running on oeis4.)