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A331857 as a simple table

na(n)
00
11
22
33
44
56
66
77
88
912
1012
1114
1212
1314
1414
1515
1616
1724
1824
1928
2024
2126
2228
2330
2424
2528
2628
2730
2828
2930
3030
3131
3232
3348
3448
3556
3648
3752
3856
3960
4048
4152
4252
4358
4456
4558
4660
4762
4848
4956
5056
5160
5256
5358
5460
5562
5656
5760
5860
5962
6060
6162
6262
6363
6464
6596
6696

[0,1,2,3,4,6,6,7,8,12,12,14,12,14,14,15,16,24,24,
 28,24,26,28,30,24,28,28,30,28,30,30,31,32,48,48,
 56,48,52,56,60,48,52,52,58,56,58,60,62,48,56,56,
 60,56,58,60,62,56,60,60,62,60,62,62,63,64,96,96]