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A128816 as a simple table

n a(n)
0 1
1 1
2 2
3 4
4 8
5 19
6 53
7 160
8 512
9 1753
10 6431
11 25072
12 103022
13 444145
14 2004281
15 9447784
16 46407476
17 236950873
18 1254862955
19 6880495528
20 38999582018
21 228195894313
22 1376543144453
23 8550048509440
24 54619642413848
25 358490894378881
26 2415134218161767
27 16686051606437104

[1,1,2,4,8,19,53,160,512,1753,6431,25072,103022,
 444145,2004281,9447784,46407476,236950873,
 1254862955,6880495528,38999582018,228195894313,
 1376543144453,8550048509440,54619642413848,
 358490894378881,2415134218161767,
 16686051606437104]

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Last modified May 23 23:52 EDT 2022. Contains 353993 sequences. (Running on oeis4.)