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A281199 as a simple table

n a(n)
1 0
2 2
3 10
4 38
5 130
6 420
7 1308
8 3970
9 11822
10 34690
11 100610
12 289032
13 823800
14 2332418
15 6566290
16 18394910
17 51310978
18 142587180
19 394905492
20 1090444930
21 3002921270
22 8249479162
23 22612505090
24 61857842448
25 168903452400
26 460409998850

[0,2,10,38,130,420,1308,3970,11822,34690,100610,
 289032,823800,2332418,6566290,18394910,51310978,
 142587180,394905492,1090444930,3002921270,
 8249479162,22612505090,61857842448,168903452400,
 460409998850]

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Last modified August 14 16:54 EDT 2024. Contains 375166 sequences. (Running on oeis4.)