login

A213921 as a simple table

na(n)
11
22
33
45
54
67
710
88
99
1013
1117
1214
136
1416
1521
1626
1722
1811
1912
2025
2131
2237
2332
2418
2515
2620
2736
2843
2950
3044
3127
3223
3324
3430
3549
3657
3765
3858
3938
4033
4119
4235
4342
4464
4573
4682
4774
4851
4945
5028
5129
5248
5356
5481
5591
56101
5792
5866
5959
6039
6134
6241
6363
6472
65100
66111

[1,2,3,5,4,7,10,8,9,13,17,14,6,16,21,26,22,11,12,
 25,31,37,32,18,15,20,36,43,50,44,27,23,24,30,49,
 57,65,58,38,33,19,35,42,64,73,82,74,51,45,28,29,
 48,56,81,91,101,92,66,59,39,34,41,63,72,100,111]