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A173645 as a simple table

na(n)
00
10
20
30
41
53
66
710
815
922
1031
1142
1255
1370
1487
15107
16130
17156
18185
19217
20253
21293
22337
23385
24437
25493
26554
27620
28691
29767
30848
31935
321028
331127
341232
351343
361460
371584
381715
391853
401998
412150
422310
432478
442654
452838
463030
473230
483439
493657
503884

[0,0,0,0,1,3,6,10,15,22,31,42,55,70,87,107,130,
 156,185,217,253,293,337,385,437,493,554,620,691,
 767,848,935,1028,1127,1232,1343,1460,1584,1715,
 1853,1998,2150,2310,2478,2654,2838,3030,3230,3439,
 3657,3884]