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A065928 as a simple table

n a(n)
0 2
1 11
2 63
3 366
4 2132
5 12425
6 72417
7 422076
8 2460038
9 14338151
10 83568867
11 487075050
12 2838881432
13 16546213541
14 96438399813
15 562084185336
16 3276066712202
17 19094316087875
18 111289829815047
19 648644662802406
20 3780578146999388
21 22034824219193921
22 128428367168164137

[2,11,63,366,2132,12425,72417,422076,2460038,
 14338151,83568867,487075050,2838881432,
 16546213541,96438399813,562084185336,
 3276066712202,19094316087875,111289829815047,
 648644662802406,3780578146999388,
 22034824219193921,128428367168164137]

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Last modified June 7 01:26 EDT 2020. Contains 334836 sequences. (Running on oeis4.)