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A085897 as a simple table

na(n)
01
12
23
35
49
515
619
725
833
943
1053
1165
1279
1391
14105
15121
16135
17153
18171
19191
20209
21231
22253
23273
24297
25321
26349
27377
28403
29433
30465
31497
32527
33561
34595
35631
36665
37705
38745
39783
40823
41865
42907
43951
44993
451035
461081
471129
481177
491225
501277
511325
521377
531431

[1,2,3,5,9,15,19,25,33,43,53,65,79,91,105,121,135,
 153,171,191,209,231,253,273,297,321,349,377,403,
 433,465,497,527,561,595,631,665,705,745,783,823,
 865,907,951,993,1035,1081,1129,1177,1225,1277,
 1325,1377,1431]