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A025728 as a simple table

n a(n)
1 1
2 3
3 7
4 13
5 21
6 31
7 43
8 57
9 73
10 91
11 110
12 131
13 154
14 179
15 206
16 235
17 266
18 299
19 334
20 370
21 408
22 448
23 490
24 534
25 580
26 628
27 678
28 730
29 783
30 838
31 895
32 954
33 1015
34 1078
35 1143
36 1210
37 1279
38 1350
39 1422
40 1496
41 1572
42 1650
43 1730
44 1812
45 1896
46 1982
47 2070
48 2159
49 2250
50 2343
51 2438

[1,3,7,13,21,31,43,57,73,91,110,131,154,179,206,
 235,266,299,334,370,408,448,490,534,580,628,678,
 730,783,838,895,954,1015,1078,1143,1210,1279,1350,
 1422,1496,1572,1650,1730,1812,1896,1982,2070,2159,
 2250,2343,2438]

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Last modified March 19 17:21 EDT 2019. Contains 321330 sequences. (Running on oeis4.)