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A294480 as a simple table

na(n)
01
13
29
314
423
531
643
755
870
985
10103
11122
12143
13165
14189
15214
16241
17269
18299
19331
20364
21399
22435
23473
24512
25553
26596
27640
28686
29733
30782
31832
32884
33937
34992
351048
361106
371166
381227
391290
401354
411420
421487
431556
441626
451698
461771
471846
481923
492001
502081

[1,3,9,14,23,31,43,55,70,85,103,122,143,165,189,
 214,241,269,299,331,364,399,435,473,512,553,596,
 640,686,733,782,832,884,937,992,1048,1106,1166,
 1227,1290,1354,1420,1487,1556,1626,1698,1771,1846,
 1923,2001,2081]