登录

260350英镑作为一个简单的表

n个a(n)
01
1
27
23
431
547
6199
783
861
9257
10139
11953
12991
13647
141735
15383
16511
171337
181069
19713
20271
211937
223223
235213
24751
258477
264339
27353
281501
29287
30829
311553
322371
331811
3411185
353023
367381
377937
386439
391433
4013975
412897
424183

[1,3,7,23,31,47,199,83,61,257,139,953,991,647,1735,383,511,1337,1069,713,271,1937,3223,5213,751,8477,4339,353,1501,287,829,1553,2371,1811,11185,3023,7381,7937,6439,1433,13975,2897,4183]