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A025648 as a simple table

na(n)
10
21
30
42
51
60
73
82
91
104
110
123
132
145
151
164
170
183
196
202
215
221
234
247
250
263
276
282
295
308
311
324
337
340
353
366
379
382
395
408
411
424
437
440
4510
463
476
489
492
505
518
521
5311
544
557
560
5710
583
596
609
612
6212
635
648
651
6611
674
687
690
7010
713
7213
736
749
752
7612
775
788
791
8011
814
8214
837
840
8510
863
8713
886
899
902
9112
925
9315
948
951
9611
974
9814
997

[0,1,0,2,1,0,3,2,1,4,0,3,2,5,1,4,0,3,6,2,5,1,4,7,
 0,3,6,2,5,8,1,4,7,0,3,6,9,2,5,8,1,4,7,0,10,3,6,9,
 2,5,8,1,11,4,7,0,10,3,6,9,2,12,5,8,1,11,4,7,0,10,
 3,13,6,9,2,12,5,8,1,11,4,14,7,0,10,3,13,6,9,2,12,
 5,15,8,1,11,4,14,7]