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A128688 as a simple table

n a(n)
1 1
2 8
3 24
4 86
5 90
6 780
7 5940
8 52350
9 278460
10 40768260
11 6847205430
12 5027286840810

[1,8,24,86,90,780,5940,52350,278460,40768260,
 6847205430,5027286840810]

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Last modified March 29 08:53 EDT 2024. Contains 371268 sequences. (Running on oeis4.)