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A378161 as a simple table

na(n)
20
31
42
53
62
74
83
96
105
113
123
136
143
153
165
176
183
198
205
216
225
238
245
259
265
275
2811
297
306
319
324
338
346
358
364
3710
385
395
407
418
424
438
442
457
4612
478
486
499
508
517
528
538
544
5510
5610
578
587
596
606
618
624
634
648
659
663
678
686
697
707
716
727
7313
744
758
768
776
789
797
804
817
8210
838
844
859
867

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