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A118604 as a simple table

na(n)
00
11
21
32
43
55
68
713
80
95
105
1110
1215
134
1411
1515
165
1712
1817
198
209
219
2210
2311
2413
253
268
2711
2811
2914
304
3110
3214
333
349
3512
3613
374
389
3913
401
416
427
4313
447
4512
4619
4710
4813
492
507
519
5216
534
544
558
5612
5712
5816
597
607
6114
628
6314
641
657
668
6715
682
699
7011
7112
7215
736
7413
756
7611
7717
787
798
8015
812
829
8311
8412

[0,1,1,2,3,5,8,13,0,5,5,10,15,4,11,15,5,12,17,8,9,
 9,10,11,13,3,8,11,11,14,4,10,14,3,9,12,13,4,9,13,
 1,6,7,13,7,12,19,10,13,2,7,9,16,4,4,8,12,12,16,7,
 7,14,8,14,1,7,8,15,2,9,11,12,15,6,13,6,11,17,7,8,
 15,2,9,11,12]