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A260721 as a simple table

na(n)
10
20
3-1
4-1
5-1
6-1
7-2
8-1
9-3
10-2
110
12-1
13-3
14-2
15-5
16-3
17-1
18-1
191
202
211
22-1
23-1
241
252
262
27-3
28-1
29-1
304
314
323
331
345
353
364
37-4
380
397
405
418
426
434
445
452
462
475
488
493
508
518
527
539
5411
5512
5616
5714
5815
5911
6016
6116
6215
6319
6417
6516
6618
6720
6815
6914
7014
7116
7212
7311
7412
7518
7619
7721
7815
7915
8011
8113
8213
8315
8419
8520
8615
8718
8823
8924
9023
9128
9227
9327
9427
9520
9623

[0,0,-1,-1,-1,-1,-2,-1,-3,-2,0,-1,-3,-2,-5,-3,-1,
 -1,1,2,1,-1,-1,1,2,2,-3,-1,-1,4,4,3,1,5,3,4,-4,0,
 7,5,8,6,4,5,2,2,5,8,3,8,8,7,9,11,12,16,14,15,11,
 16,16,15,19,17,16,18,20,15,14,14,16,12,11,12,18,
 19,21,15,15,11,13,13,15,19,20,15,18,23,24,23,28,
 27,27,27,20,23]