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A175724 as a simple table

n a(n)
0 0
1 0
2 0
3 0
4 1
5 3
6 6
7 10
8 15
9 21
10 29
11 39
12 51
13 65
14 81
15 99
16 120
17 144
18 171
19 201
20 234
21 270
22 310
23 354
24 402
25 454
26 510
27 570
28 635
29 705
30 780
31 860
32 945
33 1035
34 1131
35 1233
36 1341
37 1455
38 1575
39 1701
40 1834
41 1974
42 2121
43 2275
44 2436
45 2604
46 2780
47 2964
48 3156
49 3356

[0,0,0,0,1,3,6,10,15,21,29,39,51,65,81,99,120,144,
 171,201,234,270,310,354,402,454,510,570,635,705,
 780,860,945,1035,1131,1233,1341,1455,1575,1701,
 1834,1974,2121,2275,2436,2604,2780,2964,3156,3356]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)