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A131801 as a simple table

na(n)
01
13
29
315
427
545
6105
781
8135
9225
10315
111155
12243
13405
14675
15945
161575
173465
1815015
19729
201215
212025
223375
232835
244725
2510395
2611025
2717325
2845045
29255255
302187
313645
326075
3310125
348505
3514175
3623625
3731185
3833075
3951975
40121275
41135135
42225225

[1,3,9,15,27,45,105,81,135,225,315,1155,243,405,
 675,945,1575,3465,15015,729,1215,2025,3375,2835,
 4725,10395,11025,17325,45045,255255,2187,3645,
 6075,10125,8505,14175,23625,31185,33075,51975,
 121275,135135,225225]