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A351988 as a simple table

na(n)
00
11
22
33
44
55
66
78
88
99
1014
1115
1212
1314
1414
1515
1616
1717
1818
1920
2020
2121
2222
2323
2424
2530
2630
2732
2854
2956
3030
3132
3232
3333
3456
3557
3654
3756
3856
3957
4062
4163
4278
4380
4480
4581
4686
4787
4848
4954
5054
5156
5260
5362
5454
5556
5656
5757
5862
5963
6060
6162
6262
6363
6464
6565
6684
6786

[0,1,2,3,4,5,6,8,8,9,14,15,12,14,14,15,16,17,18,
 20,20,21,22,23,24,30,30,32,54,56,30,32,32,33,56,
 57,54,56,56,57,62,63,78,80,80,81,86,87,48,54,54,
 56,60,62,54,56,56,57,62,63,60,62,62,63,64,65,84,
 86]