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A001520 as a simple table

n a(n)
0 15
1 693
2 3315
3 9177
4 19575
5 35805
6 59163
7 90945
8 132447
9 184965
10 249795
11 328233
12 421575
13 531117
14 658155
15 803985
16 969903
17 1157205
18 1367187
19 1601145
20 1860375
21 2146173
22 2459835
23 2802657
24 3175935
25 3580965
26 4019043
27 4491465
28 4999527
29 5544525
30 6127755
31 6750513

[15,693,3315,9177,19575,35805,59163,90945,132447,
 184965,249795,328233,421575,531117,658155,803985,
 969903,1157205,1367187,1601145,1860375,2146173,
 2459835,2802657,3175935,3580965,4019043,4491465,
 4999527,5544525,6127755,6750513]

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Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)