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A074677 as a simple table

na(n)
00
11
21
31
42
54
66
79
815
925
1040
1164
12104
13169
14273
15441
16714
171156
181870
193025
204895
217921
2212816
2320736
2433552
2554289
2687841
27142129
28229970
29372100
30602070
31974169
321576239
332550409
344126648
356677056
3610803704
3717480761
3828284465
3945765225
4074049690

[0,1,1,1,2,4,6,9,15,25,40,64,104,169,273,441,714,
 1156,1870,3025,4895,7921,12816,20736,33552,54289,
 87841,142129,229970,372100,602070,974169,1576239,
 2550409,4126648,6677056,10803704,17480761,
 28284465,45765225,74049690]