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A257464 as a simple table

na(n)
01
11
25
310
423
540
673
7114
8180
9262
10379
11521
12712
13938
141228
151567
161986
172469
183052
193715
204499
215383
226410
237558
248875
2510335
2611991
2713816
2815865
2918110
3020611
3123336
3226350
3329620
3433213
3537095
3641338
3745904
3850870
3956197
4061964
4168131
4274782
4381873

[1,1,5,10,23,40,73,114,180,262,379,521,712,938,
 1228,1567,1986,2469,3052,3715,4499,5383,6410,7558,
 8875,10335,11991,13816,15865,18110,20611,23336,
 26350,29620,33213,37095,41338,45904,50870,56197,
 61964,68131,74782,81873]