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A278647 as a simple table

na(n)
15
23
32
42
53
65
71
83
91
104
111
122
132
141
151
164
175
181
191
201
212
223
232
241
254
263
272
283
291
301
313
322
332
343
352
362
371
381
394
402
413
421
431
442
451
461
473
481
491
502
512
521
531
542
551
562
571
582
595
605
611
621
633
643
652
661
672
681
691
703
712
721
731
742
751
764
771
784
791
803
811
821
833
842
851
861
871
882
892
903
913
921
931
942
953
962
971
981
991
1003

[5,3,2,2,3,5,1,3,1,4,1,2,2,1,1,4,5,1,1,1,2,3,2,1,
 4,3,2,3,1,1,3,2,2,3,2,2,1,1,4,2,3,1,1,2,1,1,3,1,1,
 2,2,1,1,2,1,2,1,2,5,5,1,1,3,3,2,1,2,1,1,3,2,1,1,2,
 1,4,1,4,1,3,1,1,3,2,1,1,1,2,2,3,3,1,1,2,3,2,1,1,1,
 3]