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A274230 as a simple table

na(n)
00
10
21
33
49
521
649
7105
8225
9465
10961
111953
123969
138001
1416129
1532385
1665025
17130305
18261121
19522753
201046529
212094081
224190209
238382465
2416769025
2533542145
2667092481
27134193153
28268402689
29536821761
301073676289
312147385345

[0,0,1,3,9,21,49,105,225,465,961,1953,3969,8001,
 16129,32385,65025,130305,261121,522753,1046529,
 2094081,4190209,8382465,16769025,33542145,
 67092481,134193153,268402689,536821761,1073676289,
 2147385345]