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A069778 as a simple table

n a(n)
0 1
1 6
2 21
3 52
4 105
5 186
6 301
7 456
8 657
9 910
10 1221
11 1596
12 2041
13 2562
14 3165
15 3856
16 4641
17 5526
18 6517
19 7620
20 8841
21 10186
22 11661
23 13272
24 15025
25 16926
26 18981
27 21196
28 23577
29 26130
30 28861
31 31776
32 34881
33 38182
34 41685
35 45396
36 49321
37 53466
38 57837
39 62440
40 67281
41 72366

[1,6,21,52,105,186,301,456,657,910,1221,1596,2041,
 2562,3165,3856,4641,5526,6517,7620,8841,10186,
 11661,13272,15025,16926,18981,21196,23577,26130,
 28861,31776,34881,38182,41685,45396,49321,53466,
 57837,62440,67281,72366]

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Last modified July 26 01:49 EDT 2021. Contains 346294 sequences. (Running on oeis4.)