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A081928 as a simple table

na(n)
11
213
336
470
5115
6171
7238
8316
9405
10604
11868
121197
131591
142158
152844
163829
175140
186939
199415
2012100
2114994
2218493
2326062
2434650
2549414
2669535
2796534
28129412
29164299
30201195
31240154
32281122
33414036
34584635
35852634
361212633
371629532

[1,13,36,70,115,171,238,316,405,604,868,1197,1591,
 2158,2844,3829,5140,6939,9415,12100,14994,18493,
 26062,34650,49414,69535,96534,129412,164299,
 201195,240154,281122,414036,584635,852634,1212633,
 1629532]