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A159940 as a simple table

na(n)
24
316
446
5106
6208
7364
8586
9886
101276
111768
122374
133106
143976
154996
166178
177534
189076
1910816
2012766
2114938
2217344
2319996
2422906
2526086
2629548
2733304
2837366
2941746
3046456
3151508
3256914
3362686
3468836
3575376
3682318
3789674
3897456
39105676
40114346

[4,16,46,106,208,364,586,886,1276,1768,2374,3106,
 3976,4996,6178,7534,9076,10816,12766,14938,17344,
 19996,22906,26086,29548,33304,37366,41746,46456,
 51508,56914,62686,68836,75376,82318,89674,97456,
 105676,114346]