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A138991 as a simple table

n a(n)
1 1
2 4
3 9
4 23
5 31
6 54
7 66
8 101
9 125
10 143
11 200
12 261
13 285
14 307
15 398
16 434
17 588
18 563
19 672
20 708
21 659
22 717
23 935
24 1078
25 1748
26 1816
27 1135
28 1173
29 1104
30 1277
31 1911
32 1975
33 2188
34 2111
35 2680
36 2593
37 2683
38 3266
39 2861
40 3297
41 3757
42 3996
43 4198
44 3275
45 2953
46 3457
47 4668
48 6688

[1,4,9,23,31,54,66,101,125,143,200,261,285,307,
 398,434,588,563,672,708,659,717,935,1078,1748,
 1816,1135,1173,1104,1277,1911,1975,2188,2111,2680,
 2593,2683,3266,2861,3297,3757,3996,4198,3275,2953,
 3457,4668,6688]

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Last modified December 13 22:55 EST 2019. Contains 329974 sequences. (Running on oeis4.)