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A143978 as a simple table

n a(n)
1 1
2 4
3 8
4 13
5 20
6 28
7 37
8 48
9 60
10 73
11 88
12 104
13 121
14 140
15 160
16 181
17 204
18 228
19 253
20 280
21 308
22 337
23 368
24 400
25 433
26 468
27 504
28 541
29 580
30 620
31 661
32 704
33 748
34 793
35 840
36 888
37 937
38 988
39 1040
40 1093
41 1148
42 1204
43 1261
44 1320
45 1380
46 1441
47 1504
48 1568
49 1633
50 1700
51 1768
52 1837

[1,4,8,13,20,28,37,48,60,73,88,104,121,140,160,
 181,204,228,253,280,308,337,368,400,433,468,504,
 541,580,620,661,704,748,793,840,888,937,988,1040,
 1093,1148,1204,1261,1320,1380,1441,1504,1568,1633,
 1700,1768,1837]

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Last modified April 19 03:05 EDT 2024. Contains 371782 sequences. (Running on oeis4.)