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A248860 as a simple table

na(n)
01
15
213
328
437
585
676
7153
8105
9252
10161
11361
12209
13516
14293
15685
16340
17877
18456
191053
20516
211429
22684
231641
24760
251981
26836
272137
281016
292641
301184
312981
321300
333409
341504
353773
361588
374337
381996
394789
401936
415181
422284
435609
442288
456381
462828
476957

[1,5,13,28,37,85,76,153,105,252,161,361,209,516,
 293,685,340,877,456,1053,516,1429,684,1641,760,
 1981,836,2137,1016,2641,1184,2981,1300,3409,1504,
 3773,1588,4337,1996,4789,1936,5181,2284,5609,2288,
 6381,2828,6957]