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A190090 as a simple table

n a(n)
0 1
1 1
2 4
3 16
4 42
5 137
6 443
7 1365
8 4316
9 13625
10 42785
11 134758
12 424331
13 1335378
14 4203927
15 13233947
16 41657808
17 131135696
18 412803240
19 1299458257
20 4090567673
21 12876698159
22 40534529294
23 127598621869
24 401667591501
25 1264408966284
26 3980231826575
27 12529367967276
28 39441185140197

[1,1,4,16,42,137,443,1365,4316,13625,42785,134758,
 424331,1335378,4203927,13233947,41657808,
 131135696,412803240,1299458257,4090567673,
 12876698159,40534529294,127598621869,401667591501,
 1264408966284,3980231826575,12529367967276,
 39441185140197]

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Last modified March 28 08:19 EDT 2024. Contains 371236 sequences. (Running on oeis4.)