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A086642 as a simple table

n a(n)
1 0
2 0
3 1
4 2
5 3
6 6
7 9
8 15
9 22
10 33
11 46
12 66
13 89
14 122
15 162
16 216
17 281
18 368
19 472
20 608
21 772
22 981
23 1233
24 1552
25 1934
26 2411
27 2984
28 3691
29 4537
30 5575 

[0,0,1,2,3,6,9,15,22,33,46,66,89,122,162,216,281,
 368,472,608,772,981,1233,1552,1934,2411,2984,3691,
 4537,5575]

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Last modified April 23 22:36 EDT 2024. Contains 371917 sequences. (Running on oeis4.)