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A249778 as a simple table

na(n)
12
27
33
44
511
625
79
819
916
1049
1117
1259
1367
14121
1581
16169
1743
18115
1964
20191
21293
22361
23289
24587
25269
26841
27863
28961
291031
301369
31441
321681
331867
342209
351849
362809
3765
38529
39256
40643
413481
423517
431639
441877
453721
464489
475041
485329
495591
506241
513557
526889
537921

[2,7,3,4,11,25,9,19,16,49,17,59,67,121,81,169,43,
 115,64,191,293,361,289,587,269,841,863,961,1031,
 1369,441,1681,1867,2209,1849,2809,65,529,256,643,
 3481,3517,1639,1877,3721,4489,5041,5329,5591,6241,
 3557,6889,7921]