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A271281 as a simple table

na(n)
01
15
28
321
420
532
644
769
860
9104
1072
11104
12121
13160
14181
15177
16232
17249
18288
19248
20309
21368
22400
23476
24500
25500
26644
27552
28668
29833
30776
31964
32892
33864
341073
35816
36980
37980
381132
391148
401196
411333
421392
431408
441444
451684
461885
471720
482100
491836
502380

[1,5,8,21,20,32,44,69,60,104,72,104,121,160,181,
 177,232,249,288,248,309,368,400,476,500,500,644,
 552,668,833,776,964,892,864,1073,816,980,980,1132,
 1148,1196,1333,1392,1408,1444,1684,1885,1720,2100,
 1836,2380]