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A377905 as a simple table

na(n)
01
12
21
32
43
53
63
71
83
94
102
113
124
134
144
154
164
171
184
195
204
212
224
235
245
253
264
275
285
295
305
315
325
335
341
355
366
375
385
392
405
416
426
435
443
455
466
476
486
494
505
516
526
536
546
556
566
576
586
596
601
616
627
636
646
656
662
676
687
697
706
716
723
736
747
757
767
776
784
796
807
817
827
837
845
856
867
877
887
897
907
917
927
937
947
957
967
971
987
998
1007
1017
1027
1037
1042
1057
1068
1078
1087
1097
1107
1113
1127
1138
1148
1158
1167
1177
1184
1197
1208
1218
1228
1238
1247

[1,2,1,2,3,3,3,1,3,4,2,3,4,4,4,4,4,1,4,5,4,2,4,5,
 5,3,4,5,5,5,5,5,5,5,1,5,6,5,5,2,5,6,6,5,3,5,6,6,6,
 4,5,6,6,6,6,6,6,6,6,6,1,6,7,6,6,6,2,6,7,7,6,6,3,6,
 7,7,7,6,4,6,7,7,7,7,5,6,7,7,7,7,7,7,7,7,7,7,7,1,7,
 8,7,7,7,7,2,7,8,8,7,7,7,3,7,8,8,8,7,7,4,7,8,8,8,8,
 7]