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A078256 as a simple table

n a(n)
0 0
1 1
2 3
3 6
4 10
5 15
6 21
7 28
8 36
9 45
10 55
11 66
12 78
13 91
14 105
15 120
16 136
17 153
18 190
19 210
20 231
21 253
22 276
23 325
24 351
25 378
26 406
27 435
28 465
29 496
30 528
31 561
32 630
33 666
34 703
35 741
36 780
37 820
38 861
39 903
40 946
41 1035
42 1275
43 1326
44 1378
45 1485
46 1540
47 1596
48 1653
49 1830
50 1953
51 2016
52 2145

[0,1,3,6,10,15,21,28,36,45,55,66,78,91,105,120,
 136,153,190,210,231,253,276,325,351,378,406,435,
 465,496,528,561,630,666,703,741,780,820,861,903,
 946,1035,1275,1326,1378,1485,1540,1596,1653,1830,
 1953,2016,2145]

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Last modified May 1 08:32 EDT 2024. Contains 372149 sequences. (Running on oeis4.)