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A131507 as a simple table

na(n)
01
13
23
35
45
55
67
77
87
97
109
119
129
139
149
1511
1611
1711
1811
1911
2011
2113
2213
2313
2413
2513
2613
2713
2815
2915
3015
3115
3215
3315
3415
3515
3617
3717
3817
3917
4017
4117
4217
4317
4417
4519
4619
4719
4819
4919
5019
5119
5219
5319
5419
5521
5621
5721
5821
5921
6021
6121
6221
6321
6421
6521
6623
6723
6823
6923
7023
7123
7223
7323
7423
7523
7623
7723

[1,3,3,5,5,5,7,7,7,7,9,9,9,9,9,11,11,11,11,11,11,
 13,13,13,13,13,13,13,15,15,15,15,15,15,15,15,17,
 17,17,17,17,17,17,17,17,19,19,19,19,19,19,19,19,
 19,19,21,21,21,21,21,21,21,21,21,21,21,23,23,23,
 23,23,23,23,23,23,23,23,23]