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A251894 as a simple table

na(n)
11280
21664
31664
41280
51232
61280
71280
8602
9602
101280
111534
12530
13556
14530
151534
161752
17594
18778
19778
20594
211752
222146
23790
241260
251316
261260
27790
282146
292838
301182
311636
321958
331958
341636
351182
362838
373446
381670
392478
402660
413530
422660
432478
441670

[1280,1664,1664,1280,1232,1280,1280,602,602,1280,
 1534,530,556,530,1534,1752,594,778,778,594,1752,
 2146,790,1260,1316,1260,790,2146,2838,1182,1636,
 1958,1958,1636,1182,2838,3446,1670,2478,2660,3530,
 2660,2478,1670]