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A197660 as a simple table

n a(n)
1 1
2 1
3 4
4 19
5 116
6 1109
7 15390
8 312785
9 9410767
10 416753642
11 27195802437
12 2617717241482
13 371516018279032
14 77760873988114592 

[1,1,4,19,116,1109,15390,312785,9410767,416753642,
 27195802437,2617717241482,371516018279032,
 77760873988114592]

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Last modified August 25 00:57 EDT 2024. Contains 375418 sequences. (Running on oeis4.)