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A023603 as a simple table

na(n)
12
25
39
417
525
634
748
862
978
1096
11116
12140
13165
14191
15220
16251
17284
18320
19359
20399
21439
22484
23530
24579
25632
26685
27741
28798
29858
30920
31984
321052
331123
341196
351269
361344
371423
381503
391585
401673
411761
421852
431946
442039
452136
462236
472336
482441

[2,5,9,17,25,34,48,62,78,96,116,140,165,191,220,
 251,284,320,359,399,439,484,530,579,632,685,741,
 798,858,920,984,1052,1123,1196,1269,1344,1423,
 1503,1585,1673,1761,1852,1946,2039,2136,2236,2336,
 2441]