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A007463 as a simple table

n a(n)
0 1
1 1
2 2
3 5
4 14
5 40
6 128
7 369
8 1214
9 3516
10 12776
11 40534
12 137404
13 463232
14 1602348
15 5216253
16 17753898
17 58597316
18 212150928
19 710453534
20 2366853608
21 8584498376
22 30026959300
23 100396304016
24 333997297900
25 1157269900344
26 3852364562536
27 13917848281928
28 45618032373712

[1,1,2,5,14,40,128,369,1214,3516,12776,40534,
 137404,463232,1602348,5216253,17753898,58597316,
 212150928,710453534,2366853608,8584498376,
 30026959300,100396304016,333997297900,
 1157269900344,3852364562536,13917848281928,
 45618032373712]

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Last modified December 5 22:37 EST 2019. Contains 329782 sequences. (Running on oeis4.)