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A298640 as a simple table

n a(n)
0 1
1 0
2 1
3 1
4 2
5 8
6 12
7 129
8 874
9 9630
10 167001
11 3043147
12 72844510
13 2423789655
14 106665874384
15 6156805673648
16 470151743582651
17 47558937432498729
18 6363358599941131580
19 1126147544855148769425
20 263646401550138303553708
21 81649922556593759124887197

[1,0,1,1,2,8,12,129,874,9630,167001,3043147,
 72844510,2423789655,106665874384,6156805673648,
 470151743582651,47558937432498729,
 6363358599941131580,1126147544855148769425,
 263646401550138303553708,
 81649922556593759124887197]

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Last modified April 19 05:19 EDT 2024. Contains 371782 sequences. (Running on oeis4.)