login

A221918 as a simple table

na(n)
11
22
31
43
56
63
74
84
912
102
115
1210
1315
1420
155
166
173
182
1912
2030
213
227
2314
2421
2528
2635
2742
287
298
308
3124
328
3340
3424
3556
364
379
3818
399
4036
4145
4218
4363
4472
459
4610
475
4830
4920
5010
5115
5270
5340
5490
555
5611
5722
5833
5944
6055
6166
6277
6388
6499
65110
6611
6712
6812
6912
703
7160
724
7384
7424
7536
7660
77132
786

[1,2,1,3,6,3,4,4,12,2,5,10,15,20,5,6,3,2,12,30,3,
 7,14,21,28,35,42,7,8,8,24,8,40,24,56,4,9,18,9,36,
 45,18,63,72,9,10,5,30,20,10,15,70,40,90,5,11,22,
 33,44,55,66,77,88,99,110,11,12,12,12,3,60,4,84,24,
 36,60,132,6]