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A092266 as a simple table

n a(n)
0 1
1 4
2 4
3 16
4 36
5 144
6 400
7 1600
8 4900
9 19600
10 63504
11 254016
12 853776
13 3415104
14 11778624
15 47114496
16 165636900
17 662547600
18 2363904400
19 9455617600
20 34134779536
21 136539118144
22 497634306624
23 1990537226496
24 7312459672336

[1,4,4,16,36,144,400,1600,4900,19600,63504,254016,
 853776,3415104,11778624,47114496,165636900,
 662547600,2363904400,9455617600,34134779536,
 136539118144,497634306624,1990537226496,
 7312459672336]

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Last modified May 10 00:45 EDT 2021. Contains 343747 sequences. (Running on oeis4.)