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A196432 as a simple table

n a(n)
1 4
2 20
3 75
4 314
5 1283
6 5311
7 21803
8 89640
9 369032
10 1517961
11 6244222
12 25688677
13 105682189
14 434759457
15 1788546806
16 7357898836
17 30269531965
18 124525282462
19 512282735741
20 2107472161705
21 8669896311631
22 35666951338042
23 146729718668682

[4,20,75,314,1283,5311,21803,89640,369032,1517961,
 6244222,25688677,105682189,434759457,1788546806,
 7357898836,30269531965,124525282462,512282735741,
 2107472161705,8669896311631,35666951338042,
 146729718668682]

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Last modified October 27 23:46 EDT 2021. Contains 348305 sequences. (Running on oeis4.)