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A144840 as a simple table

na(n)
18
214
338
468
598
6104
7194
8224
9278
10308
11458
12614
13824
14854
15878
161088
171298
181424
191448
201484
211664
221694
231784
241868
251874
261994
272084
282138
292378
302684
312708
322798
333164
343254
353458
363464
373848
384154
394514
404784
415228
425414
435438
445648
455654
465738

[8,14,38,68,98,104,194,224,278,308,458,614,824,
 854,878,1088,1298,1424,1448,1484,1664,1694,1784,
 1868,1874,1994,2084,2138,2378,2684,2708,2798,3164,
 3254,3458,3464,3848,4154,4514,4784,5228,5414,5438,
 5648,5654,5738]