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A005521 as a simple table

n a(n)
0 1
1 2
2 4
3 7
4 12
5 18
6 26
7 35
8 46
9 60
10 75
11 93
12 113
13 134
14 157
15 183
16 212
17 242
18 275
19 310
20 346
21 385
22 426
23 470
24 518
25 568
26 619
27 672
28 726
29 782
30 845
31 910
32 978
33 1047
34 1121
35 1196
36 1274
37 1355
38 1438
39 1524
40 1613
41 1703
42 1798

[1,2,4,7,12,18,26,35,46,60,75,93,113,134,157,183,
 212,242,275,310,346,385,426,470,518,568,619,672,
 726,782,845,910,978,1047,1121,1196,1274,1355,1438,
 1524,1613,1703,1798]

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Last modified September 28 10:48 EDT 2021. Contains 347714 sequences. (Running on oeis4.)