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A291667 as a simple table

na(n)
01
12
22
32
46
510
610
710
818
932
1038
1138
1250
1386
14110
15110
16134
17206
18272
19290
20342
21466
22610
23682
24770
251012
261310
271492
281654
292130
302698
313066
323410
334210
345310
356106
366812
378078
3810118
3911750
4013006
4115198
4218654
4321810
4424178
4528092
4633682
4739330
4843866

[1,2,2,2,6,10,10,10,18,32,38,38,50,86,110,110,134,
 206,272,290,342,466,610,682,770,1012,1310,1492,
 1654,2130,2698,3066,3410,4210,5310,6106,6812,8078,
 10118,11750,13006,15198,18654,21810,24178,28092,
 33682,39330,43866]