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A216713 as a simple table

n a(n)
0 1
1 1
2 3
3 12
4 27
5 105
6 420
7 1242
8 5295
9 22395
10 72738
11 323268
12 1410684
13 4806675
14 21881721
15 97371786
16 341608239
17 1579726122
18 7123796790
19 25489388367
20 119184247992
21 542664427242
22 1969440159591
23 9284827569117
24 42584603672868
25 156213604844883
26 741154831030785

[1,1,3,12,27,105,420,1242,5295,22395,72738,323268,
 1410684,4806675,21881721,97371786,341608239,
 1579726122,7123796790,25489388367,119184247992,
 542664427242,1969440159591,9284827569117,
 42584603672868,156213604844883,741154831030785]

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Last modified July 18 21:02 EDT 2024. Contains 374388 sequences. (Running on oeis4.)