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A002578 as a simple table

n a(n)
1 0
2 0
3 1
4 3
5 6
6 9
7 13
8 18
9 24
10 31
11 39
12 47
13 56
14 66
15 77
16 89
17 102
18 115
19 129
20 144
21 160
22 177
23 195
24 213
25 232
26 252
27 273
28 295
29 318
30 341
31 365
32 390
33 416
34 443
35 471
36 499
37 528
38 558
39 589
40 621
41 654
42 687
43 721
44 756
45 792
46 829
47 867
48 905
49 944
50 984
51 1025
52 1067
53 1110

[0,0,1,3,6,9,13,18,24,31,39,47,56,66,77,89,102,
 115,129,144,160,177,195,213,232,252,273,295,318,
 341,365,390,416,443,471,499,528,558,589,621,654,
 687,721,756,792,829,867,905,944,984,1025,1067,
 1110]

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Last modified April 23 09:48 EDT 2024. Contains 371905 sequences. (Running on oeis4.)