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A308344 as a simple table

na(n)
11
25
312
435
570
6145
7210
8425
9477
10782
11925
121335
131520
141617
152147
162380
173015
183290
194030
205017
217315
227740
238855
2411310
2513490
2614950
2715862
2817120
2918095
3027270
3128085
3228497
3330602
3432340
3543265
3644290
3745850
3846905
3949595
4055200
4162935
4267947
4369230
4470525

[1,5,12,35,70,145,210,425,477,782,925,1335,1520,
 1617,2147,2380,3015,3290,4030,5017,7315,7740,8855,
 11310,13490,14950,15862,17120,18095,27270,28085,
 28497,30602,32340,43265,44290,45850,46905,49595,
 55200,62935,67947,69230,70525]