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A183560 as a simple table

na(n)
31
40
51
62
73
83
96
108
1113
1215
1324
1430
1544
1654
1777
1898
19134
20165
21222
22279
23367
24454
25588
26731
27936
281148
291454
301788
312241
322732
333400
344140
355106
366183
377579
389157
3911156
4013406
4116249
4219482
4323489
4428042
4533666
4640087
4747914
4856851

[1,0,1,2,3,3,6,8,13,15,24,30,44,54,77,98,134,165,
 222,279,367,454,588,731,936,1148,1454,1788,2241,
 2732,3400,4140,5106,6183,7579,9157,11156,13406,
 16249,19482,23489,28042,33666,40087,47914,56851]