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A280775 as a simple table

n a(n)
1 1
2 3
3 11
4 65
5 573
6 6547
7 89639
8 1414417
9 25148617
10 496416579
11 10762275539
12 254153371121
13 6494217863461
14 178558132802259
15 5257524611172751
16 165089697983580641
17 5507950426778674129
18 194605351254360182403
19 7259714571747394749147
20 285174902634083710549601

[1,3,11,65,573,6547,89639,1414417,25148617,
 496416579,10762275539,254153371121,6494217863461,
 178558132802259,5257524611172751,
 165089697983580641,5507950426778674129,
 194605351254360182403,7259714571747394749147,
 285174902634083710549601]

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Last modified December 16 10:58 EST 2018. Contains 318160 sequences. (Running on oeis4.)