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A204209 as a simple table

n a(n)
1 1
2 5
3 25
4 155
5 1025
6 7167
7 51945
8 387000
9 2944860
10 22791189
11 178840639
12 1419569398
13 11377983292
14 91957314063
15 748575327757
16 6132254500856
17 50514620902564
18 418174191239443
19 3477075679541185
20 29026557341147912
21 243184916545458556

[1,5,25,155,1025,7167,51945,387000,2944860,
 22791189,178840639,1419569398,11377983292,
 91957314063,748575327757,6132254500856,
 50514620902564,418174191239443,3477075679541185,
 29026557341147912,243184916545458556]

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Last modified May 31 19:40 EDT 2020. Contains 334748 sequences. (Running on oeis4.)