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A101510 as a simple table

na(n)
01
12
25
310
421
543
687
7175
8352
9707
101417
112836
125674
1311353
1422716
1545443
1690886
17181748
18363451
19726870
201453773
212907648
225815315
2311630195
2423259059
2546515887
2693029852
27186060921
28372129424
29744272221
301488552317
312977079872

[1,2,5,10,21,43,87,175,352,707,1417,2836,5674,
 11353,22716,45443,90886,181748,363451,726870,
 1453773,2907648,5815315,11630195,23259059,
 46515887,93029852,186060921,372129424,744272221,
 1488552317,2977079872]