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A138780 as a simple table

na(n)
71
86
921
1056
11126
12252
132
14462
1518
16792
1790
181287
19330
202002
21990
223003
232574
243
254368
266006
2736
286188
2912870
30234
318568
3225740
331092
3411628
3548620
364095
3715504
3887516
3913104
404
4120349
42151164
4337128
4460

[1,6,21,56,126,252,2,462,18,792,90,1287,330,2002,
 990,3003,2574,3,4368,6006,36,6188,12870,234,8568,
 25740,1092,11628,48620,4095,15504,87516,13104,4,
 20349,151164,37128,60]