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A291877
as a simple table
n
a(n)
1
1
2
4
3
7
4
14
5
23
6
32
7
47
8
68
9
93
10
120
11
153
12
198
13
255
14
318
15
399
16
480
17
579
18
700
19
835
20
1012
21
1201
22
1428
[1,4,7,14,23,32,47,68,93,120,153,198,255,318,399, 480,579,700,835,1012,1201,1428]