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A180037 as a simple table

n a(n)
0 1
1 6
2 32
3 172
4 924
5 4964
6 26668
7 143268
8 769676
9 4134916
10 22213932
11 119339492
12 641125324
13 3444305604
14 18503778668
15 99407504548
16 534045080076
17 2869040409476
18 15413292207532
19 82804541856612
20 444849293698124

[1,6,32,172,924,4964,26668,143268,769676,4134916,
 22213932,119339492,641125324,3444305604,
 18503778668,99407504548,534045080076,
 2869040409476,15413292207532,82804541856612,
 444849293698124]

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Last modified September 18 08:15 EDT 2024. Contains 375997 sequences. (Running on oeis4.)