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A210567 as a simple table

n a(n)
0 1
1 1
2 2
3 4
4 10
5 23
6 63
7 155
8 448
9 1152
10 3452
11 9158
12 28178
13 76539
14 240370
15 665129
16 2123439
17 5964691
18 19302316
19 54898416
20 179696557 

[1,1,2,4,10,23,63,155,448,1152,3452,9158,28178,
 76539,240370,665129,2123439,5964691,19302316,
 54898416,179696557]

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Last modified April 19 12:14 EDT 2024. Contains 371792 sequences. (Running on oeis4.)