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A239305 as a simple table

na(n)
01
11
22
36
413
531
669
7153
8332
9712
101509
113169
126603
1313669
1428142
1557674
16117741
17239587
18486193
19984353
201989056
214012636
228083717
2316266181
2432698903
2565678221
26131827874
27264447198
28530221357
291062664807
302129046429

[1,1,2,6,13,31,69,153,332,712,1509,3169,6603,
 13669,28142,57674,117741,239587,486193,984353,
 1989056,4012636,8083717,16266181,32698903,
 65678221,131827874,264447198,530221357,1062664807,
 2129046429]