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A257840 as a simple table

na(n)
10
20
34
43
54
67
715
87
910
1016
1134
1213
1318
1429
1561
1621
1730
1846
1996
2031
2143
2267
23139
2443
2560
2692
27190
2857
2978
30121
31249
3273
33100
34154
35316
3691
37124
38191
39391
40111
41154
42232
43474
44133
45181
46277
47565
48157
4999
50326
51664
52183
53248
54379
55771
56211
57286
58436
59886
60241
61326
62497
631009
64273
65370
66562
671140
68307
69415
70631
711279
72343
73210
74704
751426
76381
77514
78781
791581
80421

[0,0,4,3,4,7,15,7,10,16,34,13,18,29,61,21,30,46,
 96,31,43,67,139,43,60,92,190,57,78,121,249,73,100,
 154,316,91,124,191,391,111,154,232,474,133,181,
 277,565,157,99,326,664,183,248,379,771,211,286,
 436,886,241,326,497,1009,273,370,562,1140,307,415,
 631,1279,343,210,704,1426,381,514,781,1581,421]