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A081447 as a simple table

na(n)
136
2576
336
4144
5144
636
736
836
9144
1036
11144
1236
13144
14144
1536
16144
1736
1836
19324
2036
21324
22144
23900
24144
25576
26324
27576
2836
29144
30324
31900
3236
331764
3436
3536
3636
37144
382304
3936
402304
41324
4236
43144
444356
45144
46900
47900
48900
491296
5036
5136
52144
53324
5436
55144

[36,576,36,144,144,36,36,36,144,36,144,36,144,144,
 36,144,36,36,324,36,324,144,900,144,576,324,576,
 36,144,324,900,36,1764,36,36,36,144,2304,36,2304,
 324,36,144,4356,144,900,900,900,1296,36,36,144,
 324,36,144]