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A209657 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 240369
15 665127
16 2123408
17 5964627
18 19301713
19 54897139
20 179687084 

[1,1,2,4,10,23,63,155,448,1152,3452,9158,28178,
 76539,240369,665127,2123408,5964627,19301713,
 54897139,179687084]

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Last modified September 2 17:02 EDT 2024. Contains 375614 sequences. (Running on oeis4.)