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A109811
as a simple table
n
a(n)
1
0
2
1
3
3
4
6
5
10
6
15
7
21
8
28
9
36
10
45
11
55
12
66
13
78
14
91
15
105
16
120
17
136
18
153
19
171
20
190
21
210
22
231
23
253
24
300
25
378
26
406
27
435
28
465
[0,1,3,6,10,15,21,28,36,45,55,66,78,91,105,120, 136,153,171,190,210,231,253,300,378,406,435,465]
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Last modified April 24 19:06 EDT 2024. Contains 371962 sequences. (Running on oeis4.)
