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A245321 as a simple table

na(n)
00
11
22
33
44
55
65
76
87
98
109
1110
129
1310
1411
1512
1613
1714
1812
1913
2014
2115
2216
2317
2414
2515
2616
2717
2818
2919
3015
3116
3217
3318
3419
3520
3615
3716
3817
3918
4019
4120
4220
4321
4422
4523
4624
4725
4819
4920
5021
5122
5223
5324
5423
5524
5625
5726
5827
5928
6021
6122
6223
6324
6425
6526
6624
6725

[0,1,2,3,4,5,5,6,7,8,9,10,9,10,11,12,13,14,12,13,
 14,15,16,17,14,15,16,17,18,19,15,16,17,18,19,20,
 15,16,17,18,19,20,20,21,22,23,24,25,19,20,21,22,
 23,24,23,24,25,26,27,28,21,22,23,24,25,26,24,25]