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A026797 as a simple table

n a(n)
1 0
2 0
3 0
4 1
5 0
6 0
7 0
8 1
9 1
10 1
11 1
12 2
13 2
14 3
15 3
16 5
17 5
18 7
19 8
20 11
21 12
22 16
23 18
24 24
25 27
26 34
27 39
28 50
29 57
30 70
31 81
32 100
33 115
34 140
35 161
36 195
37 225
38 269
39 311
40 371
41 427
42 505
43 583
44 688
45 791
46 928
47 1067
48 1248
49 1434
50 1668
51 1914
52 2223
53 2546
54 2945
55 3370
56 3889

[0,0,0,1,0,0,0,1,1,1,1,2,2,3,3,5,5,7,8,11,12,16,
 18,24,27,34,39,50,57,70,81,100,115,140,161,195,
 225,269,311,371,427,505,583,688,791,928,1067,1248,
 1434,1668,1914,2223,2546,2945,3370,3889]

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Last modified April 26 18:14 EDT 2024. Contains 372004 sequences. (Running on oeis4.)