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A290221 as a simple table

na(n)
00
12
24
34
48
58
68
78
816
912
108
1116
1212
138
1416
1512
168
1716
1812
198
2016
2112
228
2316
2412
258
2616
2712
288
2916
3012
318
3216
3312
348
3516
3612
378
3816
3912
408
4116
4212
438
4416
4512
468
4716
4812
498
5016
5112
528
5316
5412
558
5616
5712
588
5916
6012
618
6216
6312
648
6516
6612
678
6816
6912
708
7116
7212
738
7416
7512
768
7716
7812
798
8016
8112
828
8316
8412
858
8616
8712

[0,2,4,4,8,8,8,8,16,12,8,16,12,8,16,12,8,16,12,8,
 16,12,8,16,12,8,16,12,8,16,12,8,16,12,8,16,12,8,
 16,12,8,16,12,8,16,12,8,16,12,8,16,12,8,16,12,8,
 16,12,8,16,12,8,16,12,8,16,12,8,16,12,8,16,12,8,
 16,12,8,16,12,8,16,12,8,16,12,8,16,12]