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A131623 as a simple table

n a(n)
1 1
2 1
3 7
4 9
5 31
6 223
7 442
8 1529
9 6559
10 66111
11 159952
12 742503
13 3047656
14 19094286
15 245173117
16 761328969
17 3935539271
18 20213664703
19 117323673136
20 897132508439
21 15791065424134
22 56649181720176
23 353387529508691
24 1955231849465423

[1,1,7,9,31,223,442,1529,6559,66111,159952,742503,
 3047656,19094286,245173117,761328969,3935539271,
 20213664703,117323673136,897132508439,
 15791065424134,56649181720176,353387529508691,
 1955231849465423]

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Last modified April 1 13:11 EDT 2020. Contains 333159 sequences. (Running on oeis4.)