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A140614 as a simple table

na(n)
123
247
371
4191
5311
6383
7599
8647
9719
10839
11863
12911
13983
141103
151367
161439
171511
181607
191871
202039
212399
222423
232447
242663
252687
262711
272927
283023
293191
303359
313623
323719
333767
344007
354079
364271
374679
384799
394871
404943
415039
425087
435303

[23,47,71,191,311,383,599,647,719,839,863,911,983,
 1103,1367,1439,1511,1607,1871,2039,2399,2423,2447,
 2663,2687,2711,2927,3023,3191,3359,3623,3719,3767,
 4007,4079,4271,4679,4799,4871,4943,5039,5087,5303]