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A121385 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 1
10 1
11 2
12 2
13 3
14 4
15 5
16 6
17 7
18 8
19 10
20 12
21 14
22 16
23 18
24 20
25 22
26 24
27 26
28 28
29 31
30 34
31 37
32 40
33 43
34 46
35 49
36 52
37 55
38 58
39 62
40 66
41 70
42 74
43 78
44 82
45 86

[0,0,0,0,0,0,0,0,1,1,2,2,3,4,5,6,7,8,10,12,14,16,
 18,20,22,24,26,28,31,34,37,40,43,46,49,52,55,58,
 62,66,70,74,78,82,86]

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)