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A148678 as a simple table

n a(n)
0 1
1 1
2 3
3 7
4 21
5 73
6 229
7 761
8 2671
9 9387
10 34743
11 127299
12 462043
13 1736519
14 6577091
15 25138527
16 96964869
17 371447721
18 1437904717
19 5632450065
20 22114602041
21 87321019245
22 344916017793
23 1364490574293
24 5439723894253
25 21765386886513
26 87302393318629
27 350941102667225
28 1411395747080789
29 5695892893180473

[1,1,3,7,21,73,229,761,2671,9387,34743,127299,
 462043,1736519,6577091,25138527,96964869,
 371447721,1437904717,5632450065,22114602041,
 87321019245,344916017793,1364490574293,
 5439723894253,21765386886513,87302393318629,
 350941102667225,1411395747080789,5695892893180473]

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Last modified May 31 09:30 EDT 2020. Contains 334748 sequences. (Running on oeis4.)