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A076401 as a simple table

na(n)
11
27
315
413
531
631
740
863
991
1057
11127
12121
13217
14133
15156
16255
17403
18183
19399
20600
21403
22364
23511
24307
25847
26400
27381
28961
29741
30931
311023
32553
331651
34781
351281
361093
371767
38871
392821
40993
412340
422047
431729
442149
451767
463751
471464
481407
492667
502379

[1,7,15,13,31,31,40,63,91,57,127,121,217,133,156,
 255,403,183,399,600,403,364,511,307,847,400,381,
 961,741,931,1023,553,1651,781,1281,1093,1767,871,
 2821,993,2340,2047,1729,2149,1767,3751,1464,1407,
 2667,2379]