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A001703 as a simple table

na(n)
012
1123
2234
3345
4456
5567
6678
7789
88910
991011
10101112
11111213
12121314
13131415
14141516
15151617
16161718
17171819
18181920
19192021
20202122
21212223
22222324
23232425
24242526
25252627
26262728
27272829
28282930
29293031
30303132
31313233
32323334
33333435
34343536
35353637
36363738

[12,123,234,345,456,567,678,789,8910,91011,101112,
 111213,121314,131415,141516,151617,161718,171819,
 181920,192021,202122,212223,222324,232425,242526,
 252627,262728,272829,282930,293031,303132,313233,
 323334,333435,343536,353637,363738]