login

A117920 as a simple table

na(n)
21
32
41
53
61
74
82
92
105
113
122
136
144
152
163
177
185
193
203
218
226
234
243
259
264
277
285
293
3010
314
328
336
344
3511
364
379
385
397
405
4112
424
4310
445
458
466
4713
484
4911
505
519
526
537
5414
555
5612
575
5810
596
608
6115
626
6313
645
6511
666
679
6816
697
707
7114
725
7312
746
7510
7617
777
788
7915
806
8113
826
8311
8418
857
869
8716
888
897
9014
916
9212
9319

[1,2,1,3,1,4,2,2,5,3,2,6,4,2,3,7,5,3,3,8,6,4,3,9,
 4,7,5,3,10,4,8,6,4,11,4,9,5,7,5,12,4,10,5,8,6,13,
 4,11,5,9,6,7,14,5,12,5,10,6,8,15,6,13,5,11,6,9,16,
 7,7,14,5,12,6,10,17,7,8,15,6,13,6,11,18,7,9,16,8,
 7,14,6,12,19]