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A140778 as a simple table

na(n)
11
23
37
412
518
68
717
828
913
1027
1143
1219
1339
1460
1522
1645
1770
1826
1955
2085
2131
2263
2396
2434
2569
26105
2737
2877
29118
3042
3188
32135
3348
3497
35147
3652
37103
38156
3956
40113
41171
4259
43120
44184
4565
46131
47198
4871
49143
50216
5174
52149
53227
5479
55159
56240
5782
58165
59249
6086
61175
62265
6391
64183

[1,3,7,12,18,8,17,28,13,27,43,19,39,60,22,45,70,
 26,55,85,31,63,96,34,69,105,37,77,118,42,88,135,
 48,97,147,52,103,156,56,113,171,59,120,184,65,131,
 198,71,143,216,74,149,227,79,159,240,82,165,249,
 86,175,265,91,183]