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A266080 as a simple table

n a(n)
1 1
2 1
3 10
4 23
5 55
6 146
7 466
8 1155
9 3364
10 9229
11 25566
12 70308
13 196647
14 544696
15 1527557
16 4229863
17 11872589
18 32954820
19 92269343
20 256481433
21 718070373
22 1997666638
23 5589444252
24 15558565416
25 43515994717
26 121194482007
27 338915914513

[1,1,10,23,55,146,466,1155,3364,9229,25566,70308,
 196647,544696,1527557,4229863,11872589,32954820,
 92269343,256481433,718070373,1997666638,
 5589444252,15558565416,43515994717,121194482007,
 338915914513]

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Last modified September 22 18:43 EDT 2021. Contains 347607 sequences. (Running on oeis4.)