login

A131966 as a simple table

na(n)
11
22
33
44
56
65
77
89
98
1010
1111
1214
1313
1415
1512
1616
1719
1818
1921
2017
2120
2222
2326
2424
2528
2623
2727
2825
2929
3033
3131
3235
3330
3434
3532
3636
3737
3842
3940
4044
4139
4243
4341
4445
4538
4646
4751
4849
4954
5048
5153
5250
5355
5447
5552
5656
5762
5859
5965
6058
6164
6261
6366
6457
6563
6660
6767
6873
6970
7076
7169
7275
7372
7478
7568
7674
7771
7877

[1,2,3,4,6,5,7,9,8,10,11,14,13,15,12,16,19,18,21,
 17,20,22,26,24,28,23,27,25,29,33,31,35,30,34,32,
 36,37,42,40,44,39,43,41,45,38,46,51,49,54,48,53,
 50,55,47,52,56,62,59,65,58,64,61,66,57,63,60,67,
 73,70,76,69,75,72,78,68,74,71,77]