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A209662 as a simple table

na(n)
11
22
33
44
5-5
66
77
88
99
10-10
1111
1212
13-13
1414
15-15
1616
17-17
1818
1919
20-20
2121
2222
2323
2424
2525
26-26
2727
2828
29-29
30-30
3131
3232
3333
34-34
35-35
3636
37-37
3838
39-39
40-40
41-41
4242
4343
4444
45-45
4646
4747
4848
4949
5050
51-51
52-52
53-53
5454
55-55
5656
5757
58-58
5959
60-60
61-61
6262
6363
6464
6565

[1,2,3,4,-5,6,7,8,9,-10,11,12,-13,14,-15,16,-17,
 18,19,-20,21,22,23,24,25,-26,27,28,-29,-30,31,32,
 33,-34,-35,36,-37,38,-39,-40,-41,42,43,44,-45,46,
 47,48,49,50,-51,-52,-53,54,-55,56,57,-58,59,-60,
 -61,62,63,64,65]