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A243280 as a simple table

n a(n)
0 1
1 3
2 13
3 63
4 325
5 1748
6 9685
7 54841
8 315605
9 1838610
10 10811788
11 64041706
12 381525253
13 2283436938
14 13718099275
15 82672421423
16 499546587317
17 3025336228390
18 18357852413062
19 111587292429820
20 679306584310220

[1,3,13,63,325,1748,9685,54841,315605,1838610,
 10811788,64041706,381525253,2283436938,
 13718099275,82672421423,499546587317,
 3025336228390,18357852413062,111587292429820,
 679306584310220]

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Last modified May 27 02:54 EDT 2019. Contains 323597 sequences. (Running on oeis4.)