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A160731型作为一个简单的表

n个a(n)
12
22
4
46
56
66
712
814
912
106
1112
1214
1316
1418
1532
1634
1720
186
1912
2014
2116
2218
2332
2434
2524
2618
2732
2838
2944
3062
3192
3282
3336
346
3512
3614
3716
3818
3932
4034
4124
4218
4332
4438
4544
4662
4792
4882
4940
5018
5132
5238
5344
5462

[2,2,4,6,6,6,12,14,12,6,12,14,16,18,32,34,20,6,12,14,16,18,32,34,24,18,32,38,44,62,92,82,36,6,12,14,16,18,32,34,24,18,32,38,44,62,92,82,40,18,32,38,44,62]