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A087908 as a simple table

n a(n)
1 -1
2 3
3 17
4 47
5 99
6 179
7 293
8 447
9 647
10 899
11 1209
12 1583
13 2027
14 2547
15 3149
16 3839
17 4623
18 5507
19 6497
20 7599
21 8819
22 10163
23 11637
24 13247
25 14999
26 16899
27 18953
28 21167
29 23547
30 26099 

[-1,3,17,47,99,179,293,447,647,899,1209,1583,2027,
 2547,3149,3839,4623,5507,6497,7599,8819,10163,
 11637,13247,14999,16899,18953,21167,23547,26099]

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Last modified August 11 01:05 EDT 2024. Contains 375059 sequences. (Running on oeis4.)