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A270621型作为一个简单的表

n个a(n)
0
15
223
1
451
5-19
695
7-83
8235
9-191
10291
11-191
12335
13-300
14501
15-441
16693
17-701
18889
19-745
201001
21-893
221273
23-1225
241517
25-1365
261633
27-1461
281853
29-1633
301756
31-1703
322503
33-2671
342959
35-2659
363119
37-2919
383587
39-3439
403675
41-3647
424291
43-3855
444451

[3,5,23,1,51,-19,95,-83,235,-191,291,-191,335,-300,501,-441,693,-701,889,-745,1001,-893,1273,-1225,1517,-1365,1633,-1461,1853,-1633,1756,-1703,2503,-2671,2959,-2659,3119,-2919,3587,-3439,3675,-3647,4291,-3855,4451]