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A084537
as a simple table
n
a(n)
0
1
1
1
2
3
3
7
4
13
5
21
6
31
7
43
8
57
9
73
10
91
11
111
12
133
13
157
14
183
15
211
16
241
17
273
18
307
19
343
20
381
21
421
[1,1,3,7,13,21,31,43,57,73,91,111,133,157,183,211, 241,273,307,343,381,421]
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Last modified September 20 23:55 EDT 2024. Contains 376078 sequences. (Running on oeis4.)