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A045482 as a simple table

n a(n)
-1 1
0 4
1 134
2 760
3 3345
4 12256
5 39350
6 114096
7 307060
8 776000
9 1867170
10 4298600
11 9540169
12 20487360
13 42756520
14 86967184
15 172859325
16 336450560
17 642489660
18 1205572920
19 2226005750
20 4049168800
21 7264172196
22 12864273920
23 22507811570
24 38936117376
25 66640520250
26 112915572144

[1,4,134,760,3345,12256,39350,114096,307060,
 776000,1867170,4298600,9540169,20487360,42756520,
 86967184,172859325,336450560,642489660,1205572920,
 2226005750,4049168800,7264172196,12864273920,
 22507811570,38936117376,66640520250,112915572144]

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)