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A028872 as a simple table

n a(n)
2 1
3 6
4 13
5 22
6 33
7 46
8 61
9 78
10 97
11 118
12 141
13 166
14 193
15 222
16 253
17 286
18 321
19 358
20 397
21 438
22 481
23 526
24 573
25 622
26 673
27 726
28 781
29 838
30 897
31 958
32 1021
33 1086
34 1153
35 1222
36 1293
37 1366
38 1441
39 1518
40 1597
41 1678
42 1761
43 1846
44 1933
45 2022
46 2113
47 2206
48 2301

[1,6,13,22,33,46,61,78,97,118,141,166,193,222,253,
 286,321,358,397,438,481,526,573,622,673,726,781,
 838,897,958,1021,1086,1153,1222,1293,1366,1441,
 1518,1597,1678,1761,1846,1933,2022,2113,2206,2301]

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Last modified December 12 06:05 EST 2017. Contains 295937 sequences.