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A063844 as a simple table

na(n)
1645
24369
313747
415709
588357
6157641
7642001
8656601
91507963
102269093
112313697
124101637
137428421
147429117
158388607
1622669501
1726296401
1827218269
1927336673
2028011001
2132701297
2234487601
2336507801
2437167361
2547903701
2654215161
2771804161
2872498253
2974411131
3082279741
3186438857
3286530621
3393614521
3496135601
3597863529

[645,4369,13747,15709,88357,157641,642001,656601,
 1507963,2269093,2313697,4101637,7428421,7429117,
 8388607,22669501,26296401,27218269,27336673,
 28011001,32701297,34487601,36507801,37167361,
 47903701,54215161,71804161,72498253,74411131,
 82279741,86438857,86530621,93614521,96135601,
 97863529]