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A291408 as a simple table

na(n)
01
13
26
311
421
539
670
7126
8224
9394
10690
111201
122079
133585
146158
1510541
1617991
1730623
1851996
1988092
20148944
21251364
22423492
23712369
241196557
252007135
263362598
275626847
289405465
2915705447
3026200066
3143667802
3272719312
33121000846
34201185334
35334265089

[1,3,6,11,21,39,70,126,224,394,690,1201,2079,3585,
 6158,10541,17991,30623,51996,88092,148944,251364,
 423492,712369,1196557,2007135,3362598,5626847,
 9405465,15705447,26200066,43667802,72719312,
 121000846,201185334,334265089]