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A273247 as a simple table

n a(n)
0 1
1 4
2 29
3 152
4 696
5 3008
6 12552
7 51432
8 207592
9 833000
10 3340028
11 13364284
12 53499372
13 214105632
14 856510780
15 3426475304

[1,4,29,152,696,3008,12552,51432,207592,833000,
 3340028,13364284,53499372,214105632,856510780,
 3426475304]

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Last modified May 7 04:00 EDT 2024. Contains 372300 sequences. (Running on oeis4.)