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A025216 as a simple table

na(n)
20
31
42
55
68
713
819
926
1034
1144
1256
1368
1482
1598
16115
17134
18154
19176
20200
21225
22251
23280
24310
25341
26375
27410
28446
29485
30525
31566
32610
33655
34702
35751
36801
37853
38907
39963
401020
411079
421140
431203
441267
451334
461402
471472
481543
491617
501692
511769
521848
531929
542011
552095
562182
572270

[0,1,2,5,8,13,19,26,34,44,56,68,82,98,115,134,154,
 176,200,225,251,280,310,341,375,410,446,485,525,
 566,610,655,702,751,801,853,907,963,1020,1079,
 1140,1203,1267,1334,1402,1472,1543,1617,1692,1769,
 1848,1929,2011,2095,2182,2270]