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A207725 as a simple table

n a(n)
1 9
2 81
3 169
4 441
5 1225
6 2809
7 6241
8 14161
9 31329
10 68121
11 148225
12 321489
13 693889
14 1495729
15 3222025
16 6932689
17 14907321
18 32046921
19 68873401
20 147987225
21 317944561
22 683038225
23 1467273025
24 3151811881
25 6770162961
26 14542189281
27 31235967169

[9,81,169,441,1225,2809,6241,14161,31329,68121,
 148225,321489,693889,1495729,3222025,6932689,
 14907321,32046921,68873401,147987225,317944561,
 683038225,1467273025,3151811881,6770162961,
 14542189281,31235967169]

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Last modified January 16 05:22 EST 2022. Contains 350374 sequences. (Running on oeis4.)