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A263663 as a simple table

n a(n)
1 1
2 2
3 4
4 10
5 32
6 122
7 422
8 1222
9 3302
10 9021
11 24558
12 69453
13 198750
14 569814
15 1618526
16 4609110
17 13012670
18 36977018
19 104466558
20 297190402
21 840584030
22 2392121298
23 6764980670
24 19248138770
25 54423938014
26 154841629474
27 437824909566

[1,2,4,10,32,122,422,1222,3302,9021,24558,69453,
 198750,569814,1618526,4609110,13012670,36977018,
 104466558,297190402,840584030,2392121298,
 6764980670,19248138770,54423938014,154841629474,
 437824909566]

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)