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A189374 as a simple table

na(n)
01
12
23
37
411
515
625
735
845
965
1085
11105
12140
13175
14210
15266
16322
17378
18462
19546
20630
21750
22870
23990
241155
251320
261485
271705
281925
292145
302431
312717
323003
333367
343731
354095
364550
375005
385460
396020
406580
417140
427820

[1,2,3,7,11,15,25,35,45,65,85,105,140,175,210,266,
 322,378,462,546,630,750,870,990,1155,1320,1485,
 1705,1925,2145,2431,2717,3003,3367,3731,4095,4550,
 5005,5460,6020,6580,7140,7820]