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A047980 as a simple table

na(n)
11
23
324
47
538
617
7184
871
9368
1019
11668
1259
13634
14167
15512
16757
171028
18197
191468
20159
213382
22799
234106
24227
2510012
26317
277628
28415
2911282
30361
3138032
32521
3353630
343289
3537274
362633
3763334
381637
3934108
401861
41102296
421691
43119074
441997
45109474
462053

[1,3,24,7,38,17,184,71,368,19,668,59,634,167,512,
 757,1028,197,1468,159,3382,799,4106,227,10012,317,
 7628,415,11282,361,38032,521,53630,3289,37274,
 2633,63334,1637,34108,1861,102296,1691,119074,
 1997,109474,2053]