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A277885 as a simple table

na(n)
10
20
30
41
50
60
70
81
92
100
110
121
130
140
150
161
170
182
190
201
210
220
230
241
253
260
272
281
290
300
310
321
330
340
350
361
370
380
390
401
410
420
430
441
452
460
470
481
494
503
510
521
530
542
550
561
570
580
590
601
610
620
632
641
650
660
670
681
690
700
710
721
730
740
753
761
770
780
790
801
812
820
830
841
850
860
870
881
890
902
910
921
930
940
950
961
970
984
992
1001
1010
1020
1030
1041
1050
1060
1070
1081
1090
1100
1110
1121
1130
1140
1150
1161
1172
1180
1190
1201

[0,0,0,1,0,0,0,1,2,0,0,1,0,0,0,1,0,2,0,1,0,0,0,1,
 3,0,2,1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,1,2,0,0,1,4,
 3,0,1,0,2,0,1,0,0,0,1,0,0,2,1,0,0,0,1,0,0,0,1,0,0,
 3,1,0,0,0,1,2,0,0,1,0,0,0,1,0,2,0,1,0,0,0,1,0,4,2,
 1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,1,2,0,0,1]