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A274641 as a simple table

na(n)
00
11
22
33
41
52
63
74
85
90
103
115
121
130
145
154
162
170
184
191
205
210
221
233
244
252
266
277
284
293
308
316
327
332
349
3510
363
376
387
395
402
418
424
436
447
458
469
4710
4811
495
507
518
5210
539
5411
5512
566
575
589
598
6011
6112
6213
6314
647
651
668
6711
686
699
7010
7112
7213
739
748
755
7612
774
782
7914
8015
816
820
839
8412
8511
8613
8710
8814
892
907
914
920
9311
9410
9513
966
973
981
9915
1008
10116
1020
1037
10410

[0,1,2,3,1,2,3,4,5,0,3,5,1,0,5,4,2,0,4,1,5,0,1,3,
 4,2,6,7,4,3,8,6,7,2,9,10,3,6,7,5,2,8,4,6,7,8,9,10,
 11,5,7,8,10,9,11,12,6,5,9,8,11,12,13,14,7,1,8,11,
 6,9,10,12,13,9,8,5,12,4,2,14,15,6,0,9,12,11,13,10,
 14,2,7,4,0,11,10,13,6,3,1,15,8,16,0,7,10]