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A258620 as a simple table

n a(n)
1 1
2 1
3 2
4 13
5 114
6 1509
7 25595
8 535753
9 13305590
10 382728552
11 12515198465
12 458621603279
13 18619063906689
14 829607273337513
15 40253392454978755
16 2112878091130119496
17 119296114546292088543
18 7209829960147215492897
19 464413707136960430809460
20 31762965767675300603026848

[1,1,2,13,114,1509,25595,535753,13305590,
 382728552,12515198465,458621603279,18619063906689,
 829607273337513,40253392454978755,
 2112878091130119496,119296114546292088543,
 7209829960147215492897,464413707136960430809460,
 31762965767675300603026848]

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Last modified January 16 10:52 EST 2021. Contains 340206 sequences. (Running on oeis4.)