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A057555 as a simple table

na(n)
11
21
31
42
52
61
71
83
92
102
113
121
131
144
152
163
173
182
194
201
211
225
232
244
253
263
274
282
295
301
311
326
332
345
353
364
374
383
395
402
416
421
431
447
452
466
473
485
494
504
515
523
536
542
557
561
571
588
592
607
613
626
634
645
655
664
676
683
697
702
718
721
731
749
752
768
773
787
794
806
815
825
836
844
857
863
878
882
899
901
911
9210
932
949
953
968
974
987
995
1006
1016
1025
1037
1044
1058
1063
1079
1082
10910
1101
1111
11211
1132
11410
1153
1169
1174
1188
1195
1207
1216
1226
1237
1245
1258
1264
1279
1283
12910
1302
13111
1321
1331
13412
1352
13611
1373
13810
1394
1409
1415
1428
1436
1447
1457
1466
1478
1485
1499
1504
15110
1523
15311
1542
15512
1561

[1,1,1,2,2,1,1,3,2,2,3,1,1,4,2,3,3,2,4,1,1,5,2,4,
 3,3,4,2,5,1,1,6,2,5,3,4,4,3,5,2,6,1,1,7,2,6,3,5,4,
 4,5,3,6,2,7,1,1,8,2,7,3,6,4,5,5,4,6,3,7,2,8,1,1,9,
 2,8,3,7,4,6,5,5,6,4,7,3,8,2,9,1,1,10,2,9,3,8,4,7,
 5,6,6,5,7,4,8,3,9,2,10,1,1,11,2,10,3,9,4,8,5,7,6,
 6,7,5,8,4,9,3,10,2,11,1,1,12,2,11,3,10,4,9,5,8,6,
 7,7,6,8,5,9,4,10,3,11,2,12,1]