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A237985 as a simple table

na(n)
11
22
33
44
55
64
71
86
95
101
117
126
131
145
152
168
177
181
196
202
219
228
231
247
252
266
273
2810
299
301
318
322
337
343
356
364
3711
3810
391
409
412
428
433
447
454
467
473
481
4912
5011
511
5210
532
549
553
568
574
588
593
601
617
624
631
6413
6512
661
6711
682
6910
703
719
724
739
743
751
768
775
788
794
801
817
825
831

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