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A005428 as a simple table

na(n)
01
11
22
33
44
56
69
714
821
931
1047
1170
12105
13158
14237
15355
16533
17799
181199
191798
202697
214046
226069
239103
2413655
2520482
2630723
2746085
2869127
29103691
30155536
31233304
32349956
33524934
34787401
351181102
361771653
372657479
383986219
395979328
408968992
4113453488
4220180232
4330270348
4445405522
4568108283
46102162425
47153243637
48229865456
49344798184

[1,1,2,3,4,6,9,14,21,31,47,70,105,158,237,355,533,
 799,1199,1798,2697,4046,6069,9103,13655,20482,
 30723,46085,69127,103691,155536,233304,349956,
 524934,787401,1181102,1771653,2657479,3986219,
 5979328,8968992,13453488,20180232,30270348,
 45405522,68108283,102162425,153243637,229865456,
 344798184]