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A253431 as a simple table

na(n)
1109
2102
3120
4156
5228
6372
7660
81236
92388
104692
119300
1218516
1336948
1473812
15147540
16294996
17589908
181179732
192359380
204718676
219437268
2218874452
2337748820
2475497556
25150995028
26301989972
27603979860
281207959636
292415919188
304831838292

[109,102,120,156,228,372,660,1236,2388,4692,9300,
 18516,36948,73812,147540,294996,589908,1179732,
 2359380,4718676,9437268,18874452,37748820,
 75497556,150995028,301989972,603979860,1207959636,
 2415919188,4831838292]