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A066886 as a simple table

n a(n)
1 5
2 15
3 65
4 175
5 671
6 1105
7 2465
8 3439
9 6095
10 12209
11 14911
12 25345
13 34481
14 39775
15 51935
16 74465
17 102719
18 113521
19 150415
20 178991
21 194545
22 246559
23 285935
24 352529
25 456385
26 515201
27 546415
28 612575
29 647569
30 721505
31 1024255
32 1124111
33 1285745

[5,15,65,175,671,1105,2465,3439,6095,12209,14911,
 25345,34481,39775,51935,74465,102719,113521,
 150415,178991,194545,246559,285935,352529,456385,
 515201,546415,612575,647569,721505,1024255,
 1124111,1285745]

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Last modified June 4 17:14 EDT 2024. Contains 373102 sequences. (Running on oeis4.)