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A273490 as a simple table

n a(n)
0 1
1 6
2 15
3 36
4 69
5 114
6 175
7 260
8 389
9 546
10 735
11 956
12 1237
13 1546
14 1903
15 2316
16 2805
17 3354
18 3967
19 4644
20 5413
21 6242
22 7151
23 8140
24 9237
25 10410
26 11679
27 13028
28 14501
29 16034
30 17679
31 19444
32 21349
33 23378
34 25535
35 27820
36 30261
37 32826
38 35535
39 38388
40 41413
41 44578
42 47903

[1,6,15,36,69,114,175,260,389,546,735,956,1237,
 1546,1903,2316,2805,3354,3967,4644,5413,6242,7151,
 8140,9237,10410,11679,13028,14501,16034,17679,
 19444,21349,23378,25535,27820,30261,32826,35535,
 38388,41413,44578,47903]

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Last modified July 10 23:30 EDT 2020. Contains 335600 sequences. (Running on oeis4.)