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A001213 as a simple table

n a(n)
1 3
2 7
3 15
4 24
5 36
6 52
7 70
8 93
9 121
10 154
11 186
12 225
13 271
14 323
15 385
16 450
17 515
18 606
19 684
20 788
21 865
22 977
23 1091
24 1201
25 1361 

[3,7,15,24,36,52,70,93,121,154,186,225,271,323,
 385,450,515,606,684,788,865,977,1091,1201,1361]

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Last modified April 19 03:57 EDT 2024. Contains 371782 sequences. (Running on oeis4.)