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A068133 as a simple table

n a(n)
0 0
1 1
2 3
3 6
4 28
5 78
6 1596
7 5995
8 67896
9 887778
10 15997996
11 398988876
12 9876799878
13 299789989975
14 35998897988976
15 589598998999878
16 78999997699698778
17 7987899888859999878
18 1998997979958978979995
19 539799799988999999688778

[0,1,3,6,28,78,1596,5995,67896,887778,15997996,
 398988876,9876799878,299789989975,35998897988976,
 589598998999878,78999997699698778,
 7987899888859999878,1998997979958978979995,
 539799799988999999688778]

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Last modified August 22 16:45 EDT 2024. Contains 375369 sequences. (Running on oeis4.)