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A281026 as a simple table

na(n)
00
11
24
39
415
522
631
742
854
967
1082
1199
12117
13136
14157
15180
16204
17229
18256
19285
20315
21346
22379
23414
24450
25487
26526
27567
28609
29652
30697
31744
32792
33841
34892
35945
36999
371054
381111
391170
401230
411291
421354
431419
441485
451552
461621
471692
481764
491837
501912
511989
522067
532146

[0,1,4,9,15,22,31,42,54,67,82,99,117,136,157,180,
 204,229,256,285,315,346,379,414,450,487,526,567,
 609,652,697,744,792,841,892,945,999,1054,1111,
 1170,1230,1291,1354,1419,1485,1552,1621,1692,1764,
 1837,1912,1989,2067,2146]