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A270037 as a simple table

na(n)
34
45
57
67
713
813
913
1013
1113
1213
1323
1423
1523
1623
1723
1823
1923
2023
2123
2223
2343
2443
2543
2643
2743
2843
2943
3043
3143
3243
3343
3443
3543
3643
3743
3843
3943
4043
4143
4243
43157
44157
45157
46157
47157
48157
49157
50157
51157
52157
53157
54157
55157
56157
57157
58157
59157
60157
61157
62157
63157
64157
65157

[4,5,7,7,13,13,13,13,13,13,23,23,23,23,23,23,23,
 23,23,23,43,43,43,43,43,43,43,43,43,43,43,43,43,
 43,43,43,43,43,43,43,157,157,157,157,157,157,157,
 157,157,157,157,157,157,157,157,157,157,157,157,
 157,157,157,157]