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A241980 as a simple table

n a(n)
0 1
1 1
2 4
3 24
4 206
5 2300
6 31742
7 522466
8 9996478
9 218088504
10 5344652492
11 145386399554
12 4347272984936
13 141737636485588
14 5004538251283846
15 190247639729155110
16 7747479351505166738
17 336492490519027631984
18 15526758954835131888980
19 758548951300064645742034

[1,1,4,24,206,2300,31742,522466,9996478,218088504,
 5344652492,145386399554,4347272984936,
 141737636485588,5004538251283846,
 190247639729155110,7747479351505166738,
 336492490519027631984,15526758954835131888980,
 758548951300064645742034]

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Last modified April 16 16:13 EDT 2024. Contains 371749 sequences. (Running on oeis4.)