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A306912 as a simple table

na(n)
01
12
23
35
48
514
621
735
852
979
10113
11168
12231
13331
14450
15617
16826
171122
181469
191958
202540
213315
224260
235514
246995
258946
2611280
2714260
2817840
2922404
3027790
3134631
3242749
3352834
3464846
3579708
3697234
37118870
38144394
39175476
40212170
41256752
42309007
43372267
44446437
45535368

[1,2,3,5,8,14,21,35,52,79,113,168,231,331,450,617,
 826,1122,1469,1958,2540,3315,4260,5514,6995,8946,
 11280,14260,17840,22404,27790,34631,42749,52834,
 64846,79708,97234,118870,144394,175476,212170,
 256752,309007,372267,446437,535368]