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A187213 as a simple table

na(n)
00
11
22
32
44
54
68
710
88
94
108
1112
1212
1316
1428
1530
1616
174
188
1912
2012
2116
2228
2332
2420
2516
2628
2736
2840
2960
3088
3178
3232
334
348
3512
3612
3716
3828
3932
4020
4116
4228
4336
4440
4560
4688
4780
4836
4916
5028
5136
5240
5360
5488
5584
5656
5760
5892
59112

[0,1,2,2,4,4,8,10,8,4,8,12,12,16,28,30,16,4,8,12,
 12,16,28,32,20,16,28,36,40,60,88,78,32,4,8,12,12,
 16,28,32,20,16,28,36,40,60,88,80,36,16,28,36,40,
 60,88,84,56,60,92,112]