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A162607 as a simple table

na(n)
00
11
21
33
410
525
651
791
8148
9225
10325
11451
12606
13793
141015
151275
161576
171921
182313
192755
203250
213801
224411
235083
245820
256625
267501
278451
289478
2910585
3011775
3113051
3214416
3315873
3417425
3519075
3620826
3722681
3824643
3926715
4028900
4131201
4233621

[0,1,1,3,10,25,51,91,148,225,325,451,606,793,1015,
 1275,1576,1921,2313,2755,3250,3801,4411,5083,5820,
 6625,7501,8451,9478,10585,11775,13051,14416,15873,
 17425,19075,20826,22681,24643,26715,28900,31201,
 33621]