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A264515 as a simple table

n a(n)
1 1
2 1
3 9
4 36
5 144
6 576
7 2116
8 8281
9 31329
10 121801
11 467856
12 1809025
13 6969600
14 26884225
15 103632400
16 399560121
17 1540484001
18 5939322489
19 22899558276
20 88289802496
21 340406901136
22 1312449766884
23 5060209759081
24 19509827162049
25 75220946346001

[1,1,9,36,144,576,2116,8281,31329,121801,467856,
 1809025,6969600,26884225,103632400,399560121,
 1540484001,5939322489,22899558276,88289802496,
 340406901136,1312449766884,5060209759081,
 19509827162049,75220946346001]

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Last modified June 12 14:20 EDT 2021. Contains 344956 sequences. (Running on oeis4.)