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A025709 as a simple table

n a(n)
1 1
2 2
3 4
4 7
5 11
6 15
7 20
8 26
9 33
10 40
11 48
12 57
13 67
14 78
15 89
16 101
17 114
18 128
19 142
20 157
21 173
22 190
23 208
24 226
25 245
26 265
27 286
28 307
29 329
30 352
31 376
32 400
33 425
34 451
35 478
36 506
37 534
38 563
39 593
40 624
41 655
42 687
43 720
44 754
45 789
46 824
47 860
48 897
49 935
50 973
51 1012
52 1052
53 1093
54 1135
55 1177
56 1220

[1,2,4,7,11,15,20,26,33,40,48,57,67,78,89,101,114,
 128,142,157,173,190,208,226,245,265,286,307,329,
 352,376,400,425,451,478,506,534,563,593,624,655,
 687,720,754,789,824,860,897,935,973,1012,1052,
 1093,1135,1177,1220]

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Last modified October 19 01:25 EDT 2019. Contains 328211 sequences. (Running on oeis4.)