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A081535 as a simple table

n a(n)
1 1
2 0
3 6
4 14
5 15
6 24
7 28
8 40
9 45
10 56
11 66
12 84
13 91
14 105
15 120
16 140
17 153
18 176
19 190
20 210
21 231
22 255
23 276
24 304
25 325
26 357
27 378
28 408
29 435
30 468
31 496
32 528
33 561
34 595
35 630
36 667
37 703
38 741
39 780
40 825
41 861
42 910
43 946
44 990
45 1035
46 1085
47 1128
48 1178
49 1225
50 1275
51 1326
52 1380
53 1431

[1,0,6,14,15,24,28,40,45,56,66,84,91,105,120,140,
 153,176,190,210,231,255,276,304,325,357,378,408,
 435,468,496,528,561,595,630,667,703,741,780,825,
 861,910,946,990,1035,1085,1128,1178,1225,1275,
 1326,1380,1431]

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Last modified June 4 17:49 EDT 2024. Contains 373102 sequences. (Running on oeis4.)